* removed property declaration/assigment
* added "void" return type to subclasses of Command class.
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Signed-off-by: Alexander Piskun <bigcat88@icloud.com>
- [x] Adds Talk bot registration api
- [x] Adds `user_check` flag to ApiScope and adjusts AppEcosystemAuth
logic to check user if flag is set (true by default), this is required
for BASIC and TALK_BOT scopes, as they work without user context.
