#106: Begin adding the Analytics class from EI.

No UI or SDK support to enable/disable yet and no tracking is implemented.

ElementX/Sources/Services/Analytics/Helpers/JoinedRoomSize+MemberCount.swift

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+//
+// Copyright 2021 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import AnalyticsEvents
+
+extension AnalyticsEvent.JoinedRoom.RoomSize {
+    init?(memberCount: UInt) {
+        switch memberCount {
+        case 2:
+            self = .Two
+        case 3...10:
+            self = .ThreeToTen
+        case 11...100:
+            self = .ElevenToOneHundred
+        case 101...1000:
+            self = .OneHundredAndOneToAThousand
+        case 1001...:
+            self = .MoreThanAThousand
+        default:
+            return nil
+        }
+    }
+}

ElementX/Sources/Services/Analytics/Helpers/UserProperties+Element.swift

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+//
+// Copyright 2021 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import AnalyticsEvents
+import Foundation
+
+public extension AnalyticsEvent.UserProperties {
+    //  Initializer for Element. Strips all Web properties.
+    init(ftueUseCaseSelection: FtueUseCaseSelection?, numFavouriteRooms: Int?, numSpaces: Int?, allChatsActiveFilter: AllChatsActiveFilter?) {
+        self.init(WebMetaSpaceFavouritesEnabled: nil,
+                  WebMetaSpaceHomeAllRooms: nil,
+                  WebMetaSpaceHomeEnabled: nil,
+                  WebMetaSpaceOrphansEnabled: nil,
+                  WebMetaSpacePeopleEnabled: nil,
+                  allChatsActiveFilter: nil,
+                  ftueUseCaseSelection: ftueUseCaseSelection,
+                  numFavouriteRooms: numFavouriteRooms,
+                  numSpaces: numSpaces)
+    }
+}