net/mosquitto: Rework port

• Unbundle uthash as recommended by Porters Handbook
• Unbundle (lib)websockets as recommended by Porters Handbook
• Make (lib)websockets mandatory, default in all major distros
• Use sqlite helper
• Prefer libedit as upstream provides no way of selecting either libedit or readline and it'll try to find libedit first
• Remove hack for adding path(s) to localbase, use helper instead
• Disable WITH_HTTP_API as port will otherwise pick up libmicrohttpd in unclean environments
• Remove REINPLACE_CMD for CMakeLists.txt files as it does nothing
• Remove hardcoded cjson path

PR: 297568
Tested by: leres (maintainer)