fix(android): ads build and enable ads in android sample (#3376)

* fix: refactor androidx core version management

* chore: fix missing import rework for media3

* fix: enable IMA in sample

* chore: rename stub fie

* chore: code review, fix variable name

* chore: reorder imports

* chore: fix linking in sample

* chore: fix stub management

* chore: few cleans and ensure we don't use ima is disabled

---------

Co-authored-by: olivier <olivier.bouillet@ifeelsmart.com>

android/src/main/java/androidx/media3/exoplayer/ima/ImaAdsLoader.java

@@ -0,0 +1,61 @@
+package androidx.media3.exoplayer.ima;
+
+import android.content.Context;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.media3.common.AdViewProvider;
+import androidx.media3.common.Player;
+import androidx.media3.datasource.DataSpec;
+import androidx.media3.exoplayer.ExoPlayer;
+import androidx.media3.exoplayer.source.ads.AdsLoader;
+import androidx.media3.exoplayer.source.ads.AdsMediaSource;
+
+import com.facebook.react.uimanager.ThemedReactContext;
+
+import java.io.IOException;
+
+public class ImaAdsLoader implements AdsLoader {
+    public void setPlayer(ExoPlayer ignoredPlayer) {
+    }
+
+    @Override
+    public void setPlayer(@Nullable Player player) {
+    }
+
+    public void release() {
+    }
+
+    @Override
+    public void setSupportedContentTypes(@NonNull int... ints) {
+    }
+
+    @Override
+    public void start(@NonNull AdsMediaSource adsMediaSource, @NonNull DataSpec dataSpec, @NonNull Object adsId, @NonNull AdViewProvider adViewProvider, @NonNull EventListener eventListener) {
+    }
+
+    @Override
+    public void stop(@NonNull AdsMediaSource adsMediaSource, @NonNull EventListener eventListener) {
+    }
+
+    @Override
+    public void handlePrepareComplete(@NonNull AdsMediaSource adsMediaSource, int i, int i1) {
+    }
+
+    @Override
+    public void handlePrepareError(@NonNull AdsMediaSource adsMediaSource, int i, int i1, @NonNull IOException e) {
+    }
+
+    public static class Builder {
+        public Builder(Context ignoredThemedReactContext) {
+        }
+
+        public Builder setAdEventListener(Object ignoredReactExoplayerView) {
+            return this;
+        }
+
+        public ImaAdsLoader build() {
+            return null;
+        }
+    }
+}