feat(conference) added React Navigation

Introduce navigation for all in-conference screens.

react/features/conference/components/native/ConferenceNavigationContainerRef.js

@@ -0,0 +1,40 @@
+// @flow
+
+import React from 'react';
+
+// $FlowExpectedError
+export const conferenceNavigationRef = React.createRef();
+
+/**
+ * User defined navigation action included inside the reference to the container.
+ *
+ * @param {string} name - Destination name of the route that has been defined somewhere.
+ * @param {Object} params - Params to pass to the destination route.
+ * @returns {Function}
+ */
+export function navigate(name: string, params: Object) {
+    // $FlowExpectedError
+    return conferenceNavigationRef.current?.navigate(name, params);
+}
+
+/**
+ * User defined navigation action included inside the reference to the container.
+ *
+ * @returns {Function}
+ */
+export function goBack() {
+    // $FlowExpectedError
+    return conferenceNavigationRef.current?.goBack();
+}
+
+/**
+ * User defined navigation action included inside the reference to the container.
+ *
+ * @param {Object} params - Params to pass to the destination route.
+ * @returns {Function}
+ */
+export function setParams(params: Object) {
+    // $FlowExpectedError
+    return conferenceNavigationRef.current?.setParams(params);
+}
+