Support two options when pressing Enter in keyboard in message input

[Muaath5]

Default shortcut in sending messages in Unigram (and other desktop clients):	Shortcut	Result
Enter	Send a message
Shift+Enter	New line

Alternative shortcut (Supported by Telegram desktop, Telegram web & WebZ):	Shortcut	Result
Enter	New line
Ctrl+Enter	Send a message

And in other clients, you can choose between them. But in Unigram, you don't have an option to choose.

So, I suggest add ability in Unigram to change the send message shortcuts.

Also the choose of these should be in Chat Settings section.

[FrayxRulez]

This feature is already available and it's literally in chat settings.