Various logging fixes (#164)

Various logging fixes:
* imported the ObjCWrapper and updated the MXLogger. Also added back support for app containers
* updated MXLog.swift from El and fixed/improved its logging format
* updated most app log strings
* Remove unnecessary swiftlint rule
* Various tweaks following code review
* Added back type annoation on MXLogger logFiles method
* Fix generated Swift-ObjC header name

ElementX/Sources/Screens/SessionVerification/SessionVerificationCoordinator.swift

@@ -49,7 +49,7 @@ final class SessionVerificationCoordinator: Coordinator, Presentable {
     // MARK: - Public
     
     func start() {
-        MXLog.debug("[SessionVerificationCoordinator] did start.")
+        MXLog.debug("Did start.")
         sessionVerificationViewModel.callback = { [weak self] action in
             guard let self = self else { return }
             

ElementX/Sources/Screens/SessionVerification/SessionVerificationViewModel.swift

@@ -51,7 +51,7 @@ class SessionVerificationViewModel: SessionVerificationViewModelType, SessionVer
                 switch callback {
                 case .receivedVerificationData(let emojis):
                     guard self.stateMachine.state == .requestingVerification else {
-                        MXLog.warning("[SessionVerificationViewModel] callbacks: Ignoring receivedVerificationData due to invalid state.")
+                        MXLog.warning("Callbacks: Ignoring receivedVerificationData due to invalid state.")
                         return
                     }