Find a replacement for auto-format that formats whitespace

[lazerwalker]

When commits hit main, we run the gdformat tool, autoformat them, and commit those changes. This kinda sucks for a number of reasons.

However, it accomplishes the thing we care about most: enforcing consistent whitespace across the project in a way that doesn't put maintenance burden on moderators to explain how to fix it to devs (since Godot whitespace settings are per-editor, not per-project).

It would be great if we could solve that whitespace problem with a more elegant solution than creating a bot commit that enforces unchangeable formatting rules that we don't necessarily agree with.

[paulloz]

For this in the current action, we should try gdformat ., see if we have the same issue as with gdformat "**/*.gd". It kinda defeats the purpose if we don't run the linter on half the code.