[admob][android] Implement VideoOptions + AdRequest into all advert types

lib/modules/admob/VideoOptions.js

@@ -0,0 +1,17 @@
+export default class VideoOptions {
+
+  constructor() {
+    this._props = {
+      startMuted: true,
+    };
+  }
+
+  build() {
+    return this._props;
+  }
+
+  setStartMuted(muted: boolean = true) {
+    this._props.startMuted = muted;
+    return this;
+  }
+}