Detect invalid VCF configurations

[matsn0w]

Is your feature request related to a problem? Please describe.
We should detect if the user has provided an invalid XML file or a VCF for a different kind of ELS resource.

Describe the solution you'd like
A validator in the VCF Configurator (upload to validate) and a check when the file is parsed on the server.

Additional context
Maybe create an XSD for the XML structure?

[JustinRijsdijk]

Not: XSD formatting in lua is not really a thing(?) see: https://stackoverflow.com/questions/8033876/lua-xml-library-with-xml-schema-validation

A solution could be Utilizing the power of Javascript, and use the built in Node server on th FX server to validate the XML's.
This could be done either by exporting a function within the script, or events. But imho, events shouldn't be used for these kind of things.

[JustinRijsdijk]

Also see:

• https://docs.fivem.net/docs/scripting-reference/runtimes/javascript/functions/exports/
• https://docs.fivem.net/docs/scripting-manual/runtimes/lua/#using-exports