* core: pass event and response error without dedicated constructor
* ios: WIP
* android, desktop: update UI for new API
* ios: fix parser
* fix showing invalid chats
* fix mobile api tests
* ios: split ChatResponse to 3 enums, decode API results on the same thread
* tweak types
* remove throws
* rename
* ui: types and stubs to encrypt local files
* ios: encrypt automatically received images in local storage
* encrypt sent images, marked to be received via NSE
* ios: encrypt sent and received local voice files
* encrypt sent and received local files
* fix NSE
* remove comment
* decrypt files in background thread