[android] Replace Oboe audio with SDL3 audio (#4338)

Supersedes #4335.

Replaces the Oboe audio backend with SDL3, since we already support it.
A few caveats:

- SDL defines a JVM OnLoad method already, so we have to instead hijack
  NativeLibrary for id_cache initialization
- This also means some internal fields in Double/Integer/Boolean (namely
  `value`) can't be accessed, so I switched those to methods for now.
- SDL Java sources are pulled in from the CI package.
- Since we can't use SDLActivity, `SDL.setupJNI()` handles everything

Signed-off-by: crueter <crueter@eden-emu.dev>

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4338
Reviewed-by: Lizzie and Samuel <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

src/common/android/id_cache.h

@@ -11,6 +11,7 @@
 
 namespace Common::Android {
 
+void Initialize(JavaVM* vm, JNIEnv *env);
 JNIEnv* GetEnvForThread();
 
 /**
@@ -80,15 +81,15 @@ jfieldID GetPatchTitleIdField();
 
 jclass GetDoubleClass();
 jmethodID GetDoubleConstructor();
-jfieldID GetDoubleValueField();
+jmethodID GetDoubleValueMethod();
 
 jclass GetIntegerClass();
 jmethodID GetIntegerConstructor();
-jfieldID GetIntegerValueField();
+jmethodID GetIntegerValueMethod();
 
 jclass GetBooleanClass();
 jmethodID GetBooleanConstructor();
-jfieldID GetBooleanValueField();
+jmethodID GetBooleanValueMethod();
 
 jclass GetPlayerInputClass();
 jmethodID GetPlayerInputConstructor();