config: allow enabling numlock on startup

[asogii]

added a new option to enable numlock at launch. it supports configuration via file, environment variables, or the --numlock parameter. defaults to false

[NotAShelf]

I have some nitpicks, but they're not necessarily your fault. It only occurred to me now that how we handle config parsing is a bit fragile and misleading to contributors.

Could you please reword your commit message? This repository does not use conventional commits. You should be able to find examples in the git log.

[asogii]

I have some nitpicks, but they're not necessarily your fault. It only occurred to me now that how we handle config parsing is a bit fragile and misleading to contributors.

Could you please reword your commit message? This repository does not use conventional commits. You should be able to find examples in the git log.

Sorry for the late reply and thanks for the feedback. I've updated the commit message to follow the repo's format (config: enable numlock on startup) and rebased the branch on latest master.

Let me know if there's anything else you'd like me to tweak with the config handling!

[NotAShelf]

Needs a changelog entry actually, but I can add it myself. Thanks :)