core: multiple users api (#1679)

* api

* UCR

* Revert "UCR"

This reverts commit 1f98d25192.

* comment

* events User

* events in api User

* CRActiveUser in APISetActiveUser

* process message with/without connection

* refactor

* mute error

* user in api responses

* name

* lost response

* user in CRChatCmdError

* compiles

* user in CRChatError

* -- UserId

* mute unused warning

* catch in withUser

* remove comment

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

apps/android/app/src/main/java/chat/simplex/app/model/SimpleXAPI.kt

@@ -1611,7 +1611,7 @@ sealed class CC {
   val cmdString: String get() = when (this) {
     is Console -> cmd
     is ShowActiveUser -> "/u"
-    is CreateActiveUser -> "/u ${profile.displayName} ${profile.fullName}"
+    is CreateActiveUser -> "/create user ${profile.displayName} ${profile.fullName}"
     is StartChat -> "/_start subscribe=on expire=${onOff(expire)}"
     is ApiStopChat -> "/_stop"
     is SetFilesFolder -> "/_files_folder $filesFolder"