This is needed for openssl 1.1. Sadly this breaks json_fwd.hpp
detection, so it was removed (for now at least).

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

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

Rename RelatesTo for reply messages

Partial update of models.  Tests are still broken and there are some other issues that need to be resolved.  Getting this uploaded so that @Chethan can take a look at what's changed and modify their proposal

That's what the README suggests and - more importantly - the cmake
config file works with.
Also use angle brackets instead of quotation marks in two cases.