Add Rust language support

[dandago]

Is your feature request related to a problem? Please describe

N/A

Describe the solution you'd like

It would be really nice if you could add syntax highlighting support for the Rust language. Thanks! :)

Describe alternatives you've considered

N/A

Additional context

N/A

[godlikemouse]

Great work on this plugin. I would love to see Rust added to the supported syntax highlight.