Fix broken request wrappers in generated gRPC code (#75)

[thzgajendra]

Objective

Fixes #75.

gofr wrap grpc server generates broken Go: every request-wrapper type/method renders as a struct literal (e.g. {GetThingRequest GetThingRequest}Wrapper) instead of GetThingRequestWrapper, so request_gofr.go and its use sites don't compile (syntax error: unexpected {, expected name).

Root cause

The request-wrapper block ranges over .Requests ([]ServiceRequest) but referenced the loop variable directly:

{{- range $request := .Requests }}
type {{ $request }}Wrapper struct {   // $request is a struct, not a string

text/template falls back to fmt's default struct format {field1 field2}, so {{ $request }} renders as {GetThingRequest GetThingRequest}.

Fix

Use {{ $request.Request }} at every site in the block — the type, the embedded field, all five receiver methods, and the reflect.ValueOf(h.…) call in Bind. One-line-per-site template change; no behavior change beyond emitting the correct identifier.

Tests

Adds wrap/template_test.go (first test coverage for the wrap package): renders generateGoFrRequestWrapper for multiple request types and asserts each becomes <Type>Wrapper (type, Context, Bind, embedded field, reflect call) and that no struct literal leaks into the output.

Test plan

• go test ./... passes (incl. the new wrap test).
• End-to-end, no manual edits: generated protoc stubs + the GoFr wrapper via this CLI for a proto with two request types, wired main.go, and go build ./... succeeds — request_gofr.go now contains type GetThingRequestWrapper struct / *GetThingRequest / reflect.ValueOf(h.GetThingRequest).
• gofmt / go vet ./... clean.

Docs

No documentation change needed — the README only lists wrap grpc as a feature and doesn't reference the generated wrapper internals; this is a code-generation correctness fix.

Note

The same one-line fix is also present, bundled with unrelated naming changes, in the still-open #81. This PR isolates it as the focused fix for #75 so it can merge on its own.

[Umang01-hash]

Verified locally — nice fix. Confirmed the bug: on main the generated request wrapper doesn't even parse as Go ({GetThingRequest GetThingRequest}Wrapper → expected 'IDENT', found '{'), and with this change it parses cleanly. Every {{ $request }} site is updated to {{ $request.Request }}, and the regression test asserts no struct-literal leaks. Build + go test ./wrap green.

Since this fixes non-compiling output (any proto with >1 request type), I'd merge this first.

Heads up: #81 also adds wrap/template_test.go with the same createTestContext helper, so whichever of the two lands second will need a quick rebase to combine the test file (one createTestContext). LGTM.

[aryanmehrotra]

LGTM! Tested locally end-to-end with protoc and go build. Clean fix for #75.