feat: Makes it possible to hide the "Save Logs" link. (#8143)

As per @fremzy, the "Save Logs" feature generates a json
file with a bevy of technical information about the
meeting. This log contains the server name, server IP
address, participant's IP addresses (only in p2p sessions)
e.t.c. While this may be a useful feature for the
admin-like 'moderator', it creates unnecessary exposure
when made readily available to all users in the meeting.

This commit fixes #8036 by a config.js option to enable
the link (disabled by default), thus giving the owner of
the deployment the choice of enabling it or not.

config.js

     // input and will suggest another valid device if one is present.
     enableNoAudioDetection: true,
 
+    // Enabling this will show a "Save Logs" link in the GSM popover that can be
+    // used to collect debug information (XMPP IQs, SDP offer/answer cycles)
+    // about the call.
+    // enableSaveLogs: false,
+
     // Enabling this will run the lib-jitsi-meet noise detection module which will
     // notify the user if there is noise, other than voice, coming from the current
     // selected microphone. The purpose it to let the user know that the input could

react/features/connection-indicator/components/web/ConnectionIndicator.js

      */
     dispatch: Dispatch<any>,
 
+    /**
+     * Whether or not should display the "Save Logs" link in the local video
+     * stats table.
+     */
+    enableSaveLogs: boolean,
+
     /**
      * Whether or not clicking the indicator should display a popover for more
      * details.
                 codec = { codec }
                 connectionSummary = { this._getConnectionStatusTip() }
                 e2eRtt = { e2eRtt }
+                enableSaveLogs = { this.props.enableSaveLogs }
                 framerate = { framerate }
                 isLocalVideo = { this.props.isLocalVideo }
                 maxEnabledResolution = { maxEnabledResolution }
     const participant
         = typeof participantId === 'undefined' ? getLocalParticipant(state) : getParticipantById(state, participantId);
     const props = {
-        _connectionStatus: participant?.connectionStatus
+        _connectionStatus: participant?.connectionStatus,
+        enableSaveLogs: state['features/base/config'].enableSaveLogs
     };
 
     if (conference) {

react/features/connection-stats/components/ConnectionStatsTable.js

      */
     e2eRtt: number,
 
+    /**
+     * Whether or not should display the "Save Logs" link.
+     */
+    enableSaveLogs: boolean,
+
     /**
      * The endpoint id of this client.
      */
      * @returns {ReactElement}
      */
     render() {
-        const { isLocalVideo } = this.props;
+        const { isLocalVideo, enableSaveLogs } = this.props;
 
         return (
             <div className = 'connection-info'>
                 { this._renderStatistics() }
                 <div className = 'connection-actions'>
-                    { isLocalVideo ? this._renderSaveLogs() : null}
+                    { isLocalVideo && enableSaveLogs ? this._renderSaveLogs() : null}
                     { this._renderShowMoreLink() }
                 </div>
                 { this.props.shouldShowMore ? this._renderAdditionalStats() : null }