Added bridgeless feature flag

Summary:
Adding a flag to prepare for the phase 3 of the new architecture. This is still work in progress, not usable yet.

Changelog: [Internal]

Reviewed By: RSNara

Differential Revision: D36767843

fbshipit-source-id: 338d775681f2890461608b403749c3a7f05f84ff

ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java

@@ -31,6 +31,12 @@ public class ReactFeatureFlags {
    */
   public static volatile boolean enableFabricRenderer = false;
 
+  /**
+   * Feature flag to enable the new bridgeless architecture. Note: Enabling this will force enable
+   * the following flags: `useTurboModules` & `enableFabricRenderer`.
+   */
+  public static boolean enableBridgelessArchitecture = false;
+
   /**
    * After TurboModules and Fabric are enabled, we need to ensure that the legacy NativeModule isn't
    * isn't used. So, turn this flag on to trigger warnings whenever the legacy NativeModule system