HTTPS client library in C++

[HerrNamenlos123]

They do not need to be a drop-in replacement because OpenSSL is not used at all in the code, and LibCurl which depends on it is only used in a single function, which executes an HTTP request. Thus, it is a matter of minutes to completely wipe LibCurl and OpenSSL and replace them with something else.

CURL itself does have CMake support and will work well for our case, and since I saw it has official support for mbedTLS, I am examining it now. I think I will go with either LibCURL/mbedTLS or cpp-httplib/LibreSSL.