discussion: https library

[vansangpfiev]

We are currently using drogon, but it has too many dependencies. Should we replace it with cpp-httplib? cpp-httplib supports multiplexing IO, header only, only depends on openssl

Sub-tasks:

• janhq/cortex#1078
• janhq/cortex#1077

[vansangpfiev]

Our drogon library is built with openssl disabled. Will try it with openssl enabled.

[dan-menlo]

@vansangpfiev @namchuai I am going to close this issue, as I think we made a decision sometime last week:

• We can focus on documenting the key decisions here: Cortex.cpp: API Server #1133
• Please let me know if I am closing this incorrectly (e.g. if we still need to find a https library)