Adding show/hide Native Implementation of Dev Loading Module (#35746)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/35746

Changelog:
[Android][Added] -  For supporting Dev Loading View across multiple platforms, adding native implementation for showMessage() & hide() of Dev Loading Module

Reviewed By: rshest

Differential Revision: D42286425

fbshipit-source-id: b2aa160583bc86965501f3ed3027152bb0b47af0

ReactAndroid/src/main/java/com/facebook/react/devsupport/BridgeDevSupportManager.java

@@ -65,6 +65,8 @@ import java.util.concurrent.TimeoutException;
  */
 public final class BridgeDevSupportManager extends DevSupportManagerBase {
   private boolean mIsSamplingProfilerEnabled = false;
+  private ReactInstanceDevHelper mReactInstanceManagerHelper;
+  private @Nullable DevLoadingViewManager mDevLoadingViewManager;
 
   public BridgeDevSupportManager(
       Context applicationContext,
@@ -89,6 +91,9 @@ public final class BridgeDevSupportManager extends DevSupportManagerBase {
         surfaceDelegateFactory,
         devLoadingViewManager);
 
+    mReactInstanceManagerHelper = reactInstanceManagerHelper;
+    mDevLoadingViewManager = devLoadingViewManager;
+
     if (getDevSettings().isStartSamplingProfilerOnInit()) {
       // Only start the profiler. If its already running, there is an error
       if (!mIsSamplingProfilerEnabled) {
@@ -128,6 +133,14 @@ public final class BridgeDevSupportManager extends DevSupportManagerBase {
     }
   }
 
+  public DevLoadingViewManager getDevLoadingViewManager() {
+    return mDevLoadingViewManager;
+  }
+
+  public ReactInstanceDevHelper getReactInstanceManagerHelper() {
+    return mReactInstanceManagerHelper;
+  }
+
   @Override
   protected String getUniqueTag() {
     return "Bridge";