Still causing MAC errors

This should fix #171

Adds function to set presence explicitly, query presence explicitly and
to set presence explicitly on sync as well as receive presence updates.

Hunter wants you to set the standard via a toolchain file, but some
distros may override that. See #30.

Device verification pipeline

Merge device_verification from Chethan2k1/mtxclient

* Fix build Issue in the crypto_bot.cpp

* Add Linting

* Change the location of DeviceEventVistor

* Fix to_device test

* Remove iostream header

* Fix Remaining Tests

* Remove Sender and Type in KeyRequest

* Add endpoint to construct to_device messages

* Add new endpoint new_send_to_device

* Made Changes in new to_device_send

* Wait for carl's access_token

Add reaction JSON models

Rename RelatesTo for reply messages