Migrate MySql tools to new tool design

[alzimmermsft]

What does this PR do?

Migrates MySql tools to new design where Register and Bind options are based on Option attributes.

GitHub issue number?

[Link to the GitHub issue this PR addresses]

Pre-merge Checklist

• Required for All PRs
  • Read contribution guidelines
  • PR title clearly describes the change
  • Commit history is clean with descriptive messages (cleanup guide)
  • Added comprehensive tests for new/modified functionality
  • Created a changelog entry if the change falls among the following: new feature, bug fix, UI/UX update, breaking change, or updated dependencies. Follow the changelog entry guide
• For MCP tool changes:
  • One tool per PR: This PR adds or modifies only one MCP tool for faster review cycles
  • Updated servers/Azure.Mcp.Server/README.md and/or servers/Fabric.Mcp.Server/README.md documentation
  • Validate README.md changes running the script ./eng/scripts/Process-PackageReadMe.ps1. See Package README
  • For new or modified tool descriptions, ran ToolDescriptionEvaluator and obtained a score of 0.4 or more and a top 3 ranking for all related test prompts
  • For tools with new names, including new tools or renamed tools, update consolidated-tools.json
  • For renamed tools, follow the Tool Rename Checklist and tag the PR with the breaking-change label
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• Extra steps for Azure MCP Server tool changes:
  • Updated command list in servers/Azure.Mcp.Server/docs/azmcp-commands.md
  • Ran ./eng/scripts/Update-AzCommandsMetadata.ps1 to update tool metadata in azmcp-commands.md (required for CI)
  • Updated test prompts in servers/Azure.Mcp.Server/docs/e2eTestPrompts.md
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[Copilot]

Pull request overview

This PR migrates the Azure MySql toolset from the legacy “RegisterOptions/BindOptions + System.CommandLine OptionDefinitions” pattern to the newer [Option]-attribute-based option binding used across the repo.

Changes:

• Refactors MySql commands to use SubscriptionCommand<TOptions, TResult> with POCO options attributed via [Option].
• Removes legacy MySql option/command base classes and System.CommandLine-specific option definition types from the toolset.
• Updates unit tests and project references/dependencies to align with the new command + options shape.

Reviewed changes

Copilot reviewed 33 out of 33 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/Table/TableSchemaGetCommandTests.cs	Updates command test base to the subscription-command test harness.
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/Services/MySqlServiceTests.cs	Updates service construction after logger removal.
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/Services/MySqlServiceServerNameValidationTests.cs	Updates service construction after logger removal.
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/Server/ServerParamSetCommandTests.cs	Updates command test base to the subscription-command test harness.
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/Server/ServerParamGetCommandTests.cs	Updates command test base to the subscription-command test harness.
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/Server/ServerConfigGetCommandTests.cs	Updates command test base to the subscription-command test harness.
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/MySqlListCommandTests.cs	Updates list command tests for new binding/test harness.
tools/Azure.Mcp.Tools.MySql/tests/Azure.Mcp.Tools.MySql.Tests/Database/DatabaseQueryCommandTests.cs	Updates command test base to the subscription-command test harness.
tools/Azure.Mcp.Tools.MySql/src/Services/MySqlService.cs	Removes logger dependency; keeps existing service behavior.
tools/Azure.Mcp.Tools.MySql/src/Options/BaseMySqlOptions.cs	Replaces legacy JSON-property options with [Option]-attributed POCO options.
tools/Azure.Mcp.Tools.MySql/src/Options/MySqlListOptions.cs	Adds new options type for list routing scenarios.
tools/Azure.Mcp.Tools.MySql/src/Options/MySqlOptionDescriptions.cs	Introduces shared option description constants for reuse.
tools/Azure.Mcp.Tools.MySql/src/Options/MySqlOptionDefinitions.cs	Removes legacy System.CommandLine Option<> definitions.
tools/Azure.Mcp.Tools.MySql/src/Options/Database/DatabaseQueryOptions.cs	Migrates query option to [Option]-based binding.
tools/Azure.Mcp.Tools.MySql/src/Options/Database/DatabaseListOptions.cs	Removes legacy options type.
tools/Azure.Mcp.Tools.MySql/src/Options/Server/ServerParamGetOptions.cs	Migrates param-get options to [Option]-based binding.
tools/Azure.Mcp.Tools.MySql/src/Options/Server/ServerParamSetOptions.cs	Migrates param-set options to [Option]-based binding.
tools/Azure.Mcp.Tools.MySql/src/Options/Server/ServerConfigGetOptions.cs	Removes legacy options type.
tools/Azure.Mcp.Tools.MySql/src/Options/Server/ServerListOptions.cs	Removes legacy options type.
tools/Azure.Mcp.Tools.MySql/src/Options/Table/TableSchemaGetOptions.cs	Migrates table schema options to [Option]-based binding.
tools/Azure.Mcp.Tools.MySql/src/Options/Table/TableListOptions.cs	Removes legacy options type.
tools/Azure.Mcp.Tools.MySql/src/Commands/MySqlListCommand.cs	Refactors to new subscription command design + POCO validation.
tools/Azure.Mcp.Tools.MySql/src/Commands/MySqlJsonContext.cs	Simplifies source-gen context definition syntax.
tools/Azure.Mcp.Tools.MySql/src/Commands/Database/DatabaseQueryCommand.cs	Refactors to new subscription command design + POCO binding.
tools/Azure.Mcp.Tools.MySql/src/Commands/Database/BaseDatabaseCommand.cs	Removes legacy command base class.
tools/Azure.Mcp.Tools.MySql/src/Commands/Server/ServerConfigGetCommand.cs	Refactors to new subscription command design + POCO binding.
tools/Azure.Mcp.Tools.MySql/src/Commands/Server/ServerParamGetCommand.cs	Refactors to new subscription command design + POCO binding.
tools/Azure.Mcp.Tools.MySql/src/Commands/Server/ServerParamSetCommand.cs	Refactors to new subscription command design + POCO binding.
tools/Azure.Mcp.Tools.MySql/src/Commands/Server/BaseServerCommand.cs	Removes legacy command base class.
tools/Azure.Mcp.Tools.MySql/src/Commands/Table/TableSchemaGetCommand.cs	Refactors to new subscription command design + POCO binding.
tools/Azure.Mcp.Tools.MySql/src/GlobalUsings.cs	Removes legacy global using for System.CommandLine.
tools/Azure.Mcp.Tools.MySql/src/Azure.Mcp.Tools.MySql.csproj	Updates core project reference style; drops direct System.CommandLine dependency.
servers/Azure.Mcp.Server/changelog-entries/1784222764751.yaml	Adds breaking-change entry for MySql tool option surface changes.