Lua: Add FS, FS.CreateDirectory

Changelog.md

@@ -8,6 +8,8 @@
 - ADDED `MP.IsPlayerGuest(id) -> boolean`: Whether player with id is a guest
 - ADDED `MP.Settings` table providing aliases for 0,1,2,etc. in MP.Set(id,val)
 - ADDED `MP.PrintRaw` prints messages without `[TIME DATE] [LUA]` etc.
+- ADDED `FS` table to host some effective filesystem manipulation functions
+- ADDED `FS.CreateDirectory(path) -> bool,string` creates the path's directory (all missing pieces) and returns whether it fails and why if it did
 - ADDED plugin directories to `package.path` and `package.cpath` before `onInit`
 - ADDED ability to add `PluginConfig.toml` to your plugin folder to change some settings
 - ADDED ability to share a lua state with other plugins via `StateId` setting in `PluginConfig.toml`