feat(plugins): Add Sideload Plugin System with External Repo Support

[test01203]

This PR implements the Sideload Plugin System with External Repo Support, and addresses all recent developer feedback for a clean merge into the main branch.

Key Changes & Fixes:

1. Clean PR Environment: All plugin-related code (ExternalExtensionRunner, PluginManager, UI views) has been correctly staged.
2. Build & Dependencies Fixed:
   • Provided the missing quickjs-kt-android-1.0.5-nuvio.aar in app/libs/.
   • Resolved Dagger/MissingBinding and MergeJavaResWorkAction conflicts.
   • Updated build.gradle.kts to use compilerOptions instead of the deprecated kotlinOptions.
   • Project successfully compiles under assembleSideloadDebug with zero errors.
3. Fixed TV Series Episode Identification:
   • Rewrote the findEpisode() logic in ExternalExtensionRunner.kt.
   • Added robust fallbacks for CloudStream providers that fail to explicitly assign season/episode numbers. The system now falls back to string-title matching (e.g., "Episode 3") and absolute indexing when necessary.

Ready for review and merge!

[test01203]

I've manually included the missing .aar file in the latest commit. Please approve the CI run for the new commit.

[ProdigyV21]

Great feature, can really improve ARVIO, but before merge we need it cleaned up and Play behavior made explicit.

Required before merge:

1. Fix the Play build. Right now Play compile fails because shared/main classes inject sideload-only classes like PluginManager and ProfileDataStoreFactory. Add proper shared interfaces or Play stubs so both Play and Sideload flavors compile.

2. Decide and implement the Play behavior clearly:

   • either enable plugins in Play too, knowing the policy risk,
   • or use a limited/allowlisted Play mode,
   • or keep runtime loading sideload-only while Play shows the UI disabled/hidden.
     But it should not accidentally half-compile or reference sideload-only code.

3. Clean formatting. git diff --check currently fails with lots of trailing whitespace/new blank-line issues.

4. Verify both builds:

   • ./gradlew :app:compilePlayDebugKotlin
   • ./gradlew :app:compileSideloadDebugKotlin

After those are fixed, I think this can be a very strong feature.