Implementation phone.requestCall

[aykutalparslan]

Start a telegram phone call

phone.phoneCall#ec82e140 phone_call:PhoneCall users:Vector<User> = phone.PhoneCall; ---functions--- phone.requestCall#42ff96ed flags:# video:flags.0?true user_id:InputUser random_id:int g_a_hash:bytes protocol:PhoneCallProtocol = phone.PhoneCall;