update KeyboardButtonRequestUsers KeyboardButtonRequestChat api

[yaooort]

new Api

RequestName     *bool `json:"request_name,omitempty"`     // user, optional
RequestTitle    *bool `json:"request_title,omitempty"`    // chat, optional
RequestUsername *bool `json:"request_username,omitempty"` // chat & user, optional
RequestPhoto    *bool `json:"request_photo,omitempty"`    // chat & user, optional

[yaooort]

close #674

[kyrylo]

Thanks for the PR, @yaooort!

@tucnak, can we please get this merged?

[kyrylo]

Hey @demget! May I know why this was closed?

[demget]

@kyrylo already implemented in other PR