feat: extend AnyManagerSDK with Line, Meta, Mintegral, Moloco, Pangle and Unity mediation adapters

[Narender84]

Summary

• Extends the local SPM package AnyManagerSDK with four additional
  Google-published mediation adapters, bringing the bundled set from six to
  eight alongside Google Mobile Ads.
• Updates AnyManagerSDK/Package.swift to declare the four new upstream package
  dependencies and wire their adapter products into
  AnyManagerSDKTarget.dependencies: so consumers continue to get every adapter
  through one AnyManagerSDK product.
• Adds the following four adapter products alongside the existing six:
  • Line (LineAdapterTarget)
  • Meta / Facebook Audience Network (MetaAdapterTarget)
  • Mintegral (MintegralAdapterTarget)
  • Moloco (MolocoAdapterTarget)
  • Pangle (PangleAdapterTarget)
  • Unity (UnityAdapterTarget)
• Regenerates AnyManagerSDK/Package.resolved so the lockfile matches the
  expanded dependency graph (new pins for each of the four new upstream packages
  plus any transitive native SDKs they pull in).
• Refreshes README.md so the package contents and project structure sections
  reflect the full eight-adapter set.

Why

The previous commit shipped AnyManagerSDK as a one-stop local SPM wrapper for
Google Mobile Ads + six mediation adapters. Consuming targets still had to
re-import four more Google-published mediation adapters (Line, Meta,
Mintegral, Moloco, Pangle, Unity) by hand through individual SPM URLs —
duplicating the per-app wiring that the local package was created to
eliminate.

This change brings the remaining adapters under the same single AnyManagerSDK
product, so consumers:

• Add the package once via Xcode's Add Local package flow.
• Pin adapter versions in exactly one place (Package.swift), not per-app.
• Get all eight mediation adapters transitively, without enumerating each
  upstream URL.

Adding these under one package also makes future adapter bumps (e.g. Meta 6.x,
Unity 5.x) a one-file change instead of a per-adapter PR review across each
consuming app.

Test plan

• Package.swift matches the existing adapter entry style (snake_case url,
  from: minimum-version pinning, .product(name:..., package:...) selector)
• AnyManagerSDKTarget still exposes a single library(name: "AnyManagerSDK",
  targets: ["AnyManagerSDKTarget"]) product — no public API surface change
• platforms: [.iOS(.v13)] unchanged; no iOS deployment target bump
• README Package Contents lists all 8 mediation adapters in the same bullet
  format
• swift package describe parses cleanly and reports the expanded
  direct-dependency set (GoogleMobileAds + AppLovin, Chartboost, DTExchange,
  InMobi, IronSource, LiftoffMonetize, Line, Meta, Mintegral, Moloco, Pangle,
  Unity)
• Package.resolved regenerated and resolves cleanly — new pins for the four
  added packages plus their transitive native SDKs
• First real build: open the local package in Xcode 16+, confirm AnyManagerSDK
  resolves, and run the AnyManagerSDKTests test target on an iOS 18 simulator
• First integration build: drop the package into a consuming app, build for
  iOS Simulator + Device, and confirm all eight adapter frameworks (AppLovin,
  Chartboost, DTExchange, InMobi, IronSource, LiftoffMonetize, Line, Meta,
  Mintegral, Moloco, Pangle, Unity) link

Breaking changes

None — purely additive. The package already existed; this change only widens
its dependency graph. CocoaPods consumers continue to use the podspec as
before. SwiftPM consumers get four more adapters transitively without any
product-surface change.

Checklist

• No debug statements or commented-out code left in
• Docs updated (README documents the full eight mediation adapters)
• Repo convention: existing from: / .product(name:..., package:...) style
  preserved across all new adapter entries
• Single public product surface (AnyManagerSDK) — no new products exposed to
  consumers
• Lockfile (Package.resolved) regenerated to match the new graph