Introduce HTTP interface

[dorin-ga]

Separate HTTP implementation in order to more easily manage dependencies and support other libraries/platforms (e.g: consoles). The default HTTP implementation remains CURL.

• create abstract HTTP interface
• have HTTP API be agnostic of http implementation
• create the default CURL interface
• allow registering a custom interface
• better dependency management
• write tests

[github-actions]

LCOV of commit 681c7e8 during Test Coverage #135

Summary coverage rate:
  lines......: 40.5% (1149 of 2835 lines)
  functions..: 52.6% (211 of 401 functions)
  branches...: no data found

Files changed coverage rate: n/a