Render Room and Message Pills (#3809)

* added a way to render the room and the message

pills, but is WIP

* permalinks now get converted into pills!

* fixed an issue where room address mentions

were not adding a URL properly but a string

* updated tests

* c

* Revert "c"

This reverts commit 5c80252fa23dba7e4d44f2a07fbf1e9500e37c82.

* updated tests

* more tests

* created APIs to get a specific RoomSummary

given the id or the alias

* small mention builder improvement

* pr suggestions

UnitTests/Sources/HomeScreenRoomTests.swift

@@ -34,6 +34,7 @@ class HomeScreenRoomTests: XCTestCase {
                                   unreadNotificationsCount: unreadNotificationsCount,
                                   notificationMode: notificationMode,
                                   canonicalAlias: nil,
+                                  alternativeAliases: [],
                                   hasOngoingCall: hasOngoingCall,
                                   isMarkedUnread: isMarkedUnread,
                                   isFavourite: false)