Editor Commands (#1450)

* add commands hook

* add commands in editor

* add command auto complete menu

* add commands in room input

* remove old reply code from room input

* fix video component css

* do not auto focus input on android or ios

* fix crash on enable block after selection

* fix circular deps in editor

* fix autocomplete return focus move editor cursor

* remove unwanted keydown from room input

* fix emoji alignment in editor

* test ipad user agent

* refactor isAndroidOrIOS to mobileOrTablet

* update slate & slate-react

* downgrade slate-react to 0.98.4
0.99.0 has breaking changes with ReactEditor.focus

* add sql to readable ext mimetype

* fix empty editor formatting gets saved as draft

* add option to use enter for newline

* remove empty msg draft from atom family

* prevent msg ctx menu from open on text selection

src/app/components/editor/autocomplete/autocompleteQuery.ts

@@ -4,11 +4,13 @@ export enum AutocompletePrefix {
   RoomMention = '#',
   UserMention = '@',
   Emoticon = ':',
+  Command = '/',
 }
 export const AUTOCOMPLETE_PREFIXES: readonly AutocompletePrefix[] = [
   AutocompletePrefix.RoomMention,
   AutocompletePrefix.UserMention,
   AutocompletePrefix.Emoticon,
+  AutocompletePrefix.Command,
 ];
 
 export type AutocompleteQuery<TPrefix extends string> = {