The terms "plugins" and "mods" were used interchangeably to refer to collections of server scripts, which was bound to cause confusion later on, especially with client data files frequently being referred to as "plugins" and "mods" as well.
Moreover, the server configuration file now starts its manual ordering with "Module1" for consistency with the pluginlist.json (soon to be dataFileList.json) of the CoreScripts.
This commit changes the style of tes3mp serverside scripting mods. Short list of changes:
* Break compatibility with old server mods
* OOP style lua API
* Basic dependency checker, allowing the installation of multiple server mods without changing configs
* Remove support for C++ plugins
* Change outdated LuaBridge to [sol2](https://github.com/ThePhD/sol2);
* Support GCC, Clang and MSVC compilers
* New environment variables: "TES3MP_SERVER_DIR" and "TES3MP_SERVER_USERDIR";
* New entity "Command controller" for registering new chat commands;
* New Event system
* Simplified Timer API
* All Lua mods now run in their own environments
* Add global namespace - Data that can be used for communicating between mods
* Player and Actor inherit base class NetActor
