feat: allow to enable abi splitting via env var for local builds

packages/build-tools/templates/eas-build.gradle

@@ -51,4 +51,29 @@ android {
       signingConfig android.signingConfigs.release
     }
   }
+
+  // Dynamic ABI Splitting Configuration
+  def enableAbiSplittingEnv = System.getenv("EAS_BUILD_ENABLE_ABI_SPLITTING")
+  boolean enableAbiSplitting = "true".equalsIgnoreCase(enableAbiSplittingEnv)
+
+  if (enableAbiSplitting) {
+    def abiListEnv = System.getenv("EAS_BUILD_ABI_LIST")
+    List<String> abiListToInclude = []
+
+    if (abiListEnv) {
+      abiListToInclude = abiListEnv.split(',').collect { it.trim() } // Split by comma and trim whitespace
+    } else {
+      // Default ABI list if EAS_BUILD_ABI_LIST is not set
+      abiListToInclude = ['armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64']
+    }
+
+    splits {
+      abi {
+        enable true
+        reset()
+        include abiListToInclude as String[]
+        universalApk false
+      }
+    }
+  }
 }