support matrix.to links (#1849)

* support room via server params and eventId

* change copy link to matrix.to links

* display matrix.to links in messages as pill and stop generating url previews for them

* improve editor mention to include viaServers and eventId

* fix mention custom attributes

* always try to open room in current space

* jump to latest remove target eventId from url

* add create direct search options to open/create dm with url

src/app/pages/client/direct/index.ts

@@ -1,2 +1,3 @@
 export * from './Direct';
 export * from './RoomProvider';
+export * from './DirectCreate';