feat: Adds a property to JitsiParticipant is hidden from recorder. (#1889)

* feat: Adds a property to JitsiParticipant is hidden from recorder.

When hiddenFromRecorder is enable in config we check the presence for the flag (the jwt identity part).

* squash: Fixes comments.

JitsiParticipant.js

     }
 
     /**
-     * @returns {Boolean} Wheter this participants replaces another participant
+     * @returns {Boolean} Whether this participant is a hidden participant. Some
+     * special system participants may want to join hidden (like for example the
+     * recorder).
+     */
+    isHiddenFromRecorder() {
+        return Boolean(this._identity?.user?.['hidden-from-recorder']);
+    }
+
+    /**
+     * @returns {Boolean} Whether this participant replaces another participant
      * from the meeting.
      */
     isReplacing() {

modules/xmpp/ChatRoom.js

      * @param {boolean} options.disableDiscoInfo - when set to {@code false} will skip disco info.
      * This is intended to be used only for lobby rooms.
      * @param {boolean} options.enableLobby - when set to {@code false} will skip creating lobby room.
+     * @param {boolean} options.hiddenFromRecorderFeatureEnabled - when set to {@code true} we will check identity tag
+     * for node presence.
      */
     constructor(connection, jid, password, XMPP, options) {
         super();
 
             if (userInfo) {
                 identity.user = {};
-                for (const tag of [ 'id', 'name', 'avatar' ]) {
+                const tags = [ 'id', 'name', 'avatar' ];
+
+                if (this.options.hiddenFromRecorderFeatureEnabled) {
+                    tags.push('hidden-from-recorder');
+                }
+
+                for (const tag of tags) {
                     const child
                         = userInfo.children.find(c => c.tagName === tag);
 

types/auto/JitsiParticipant.d.ts

      */
     isHidden(): boolean;
     /**
-     * @returns {Boolean} Wheter this participants replaces another participant
+     * @returns {Boolean} Whether this participant is a hidden participant. Some
+     * special system participants may want to join hidden (like for example the
+     * recorder).
+     */
+    isHiddenFromRecorder(): boolean;
+    /**
+     * @returns {Boolean} Whether this participant replaces another participant
      * from the meeting.
      */
     isReplacing(): boolean;

types/auto/modules/xmpp/ChatRoom.d.ts

      * @param {boolean} options.disableDiscoInfo - when set to {@code false} will skip disco info.
      * This is intended to be used only for lobby rooms.
      * @param {boolean} options.enableLobby - when set to {@code false} will skip creating lobby room.
+     * @param {boolean} options.hiddenFromRecorderFeatureEnabled - when set to {@code true} we will check identity tag
+     * for node presence.
      */
     constructor(connection: XmppConnection, jid: any, password: any, XMPP: any, options: any);
     xmpp: any;