Move libhttpserver to drogon

[OnlineDynamic]

Placeholder for change of internal C++ http server

[OnlineDynamic]

https://github.com/FalconChristmas/fpp-new-feature-testing/tree/drogon-migration

[patdelaney]

for clarity @OnlineDynamic is there anything in particular we should be looking for or is it all around web ui ? I'm guessing plugins will be affected as well?

[OnlineDynamic]

It's less about UI it's more about the internal api handler... could causes issues in functionality throughout the system but so far seems ok... it will make all c++ based plugins flag as troublesome until they have all been altered

[dkulp]

Pretty much any http request to the "internal" http server will now go through drogon . Thus, it would be great to test they process things correctly and return the expected values.

Pretty much anything that triggers the rewrite rules:

    RewriteRule ^fppd/(.*)$ http://localhost:32322/fppd/$1 [P]
    RewriteRule ^overlays/(.*)$ http://localhost:32322/overlays/$1 [P]
    RewriteRule ^models(.*)$ http://localhost:32322/models$1 [P]
    RewriteRule ^commands(.*)$ http://localhost:32322/commands$1 [P]
    RewriteRule ^command(.*)$ http://localhost:32322/command$1 [P]
    RewriteRule ^player(.*)$ http://localhost:32322/player$1 [P]
    RewriteRule ^gpio(.*)$ http://localhost:32322/gpio$1 [P]
    RewriteRule ^plugin-apis/(.*)$ http://localhost:32322/$1 [P]

    RewriteRule ^http-virtual-display/(.*)$ - [L]
    RewriteRule ^http-virtual-display-3d/(.*)$ - [L]