Add some new space properties. (#4544)

* Use the via property on SpaceRoom.

* Fall back to the canonical alias as a space room name if needs be.

* Use SpaceRoom.isDirect for computing the name/avatar.

* Pass in the parent space as a workaround for no restricted join rules.

ElementX/Sources/Mocks/SpaceRoomProxyMock.swift

@@ -15,6 +15,8 @@ extension SpaceRoomProxyMock {
         var avatarURL: URL?
         
         var isSpace: Bool
+        var isDirect: Bool?
+        var parent: SpaceRoomProxyProtocol?
         var childrenCount = 0
         
         var joinedMembersCount = 0
@@ -35,6 +37,8 @@ extension SpaceRoomProxyMock {
         name = configuration.name
         avatarURL = configuration.avatarURL
         isSpace = configuration.isSpace
+        isDirect = configuration.isDirect
+        parent = configuration.parent
         childrenCount = configuration.childrenCount
         joinedMembersCount = configuration.joinedMembersCount
         heroes = configuration.heroes
@@ -125,8 +129,10 @@ extension [SpaceRoomProxyProtocol] {
             SpaceRoomProxyMock(.init(id: "!\(typeName.lowercased())3:matrix.org",
                                      name: "Joined \(typeName)",
                                      isSpace: isSpace,
+                                     parent: SpaceRoomProxyMock(.init(name: "Company", isSpace: true)),
                                      joinedMembersCount: 123,
                                      topic: "Discussion on specific topic goes here.",
+                                     joinRule: .restricted(rules: []),
                                      state: .joined))
         ]
     }