Submitting abuse reports to moderators (#6213)

This patch is part of MSC3215. It implements `feature_report_to_moderator`
    to let end-users send report to room moderators instead of homeserver
    administrators.

    This only works if the room has been setup for moderation, something that
    does not have a UX yet.

    Signed-off-by: David Teller <davidt@element.io>

src/settings/Settings.tsx

@@ -131,6 +131,13 @@ export interface ISetting {
 }
 
 export const SETTINGS: {[setting: string]: ISetting} = {
+    "feature_report_to_moderators": {
+        isFeature: true,
+        displayName: _td("Report to moderators prototype. " +
+            "In rooms that support moderation, the `report` button will let you report abuse to room moderators"),
+        supportedLevels: LEVELS_FEATURE,
+        default: false,
+    },
     "feature_spaces": {
         isFeature: true,
         displayName: _td("Spaces prototype. Incompatible with Communities, Communities v2 and Custom Tags. " +