infra: Test out mise

[hunger]

I found mise a tool to help manage development projects. https://mise.jdx.dev/

It basically can manage ENV vars based on the directory you are in, manages tools you need (and makes thoser available based on the directory you are in), and allows to define simple tasks that can then be shared between developers.

Tools can be found in npm, pipx, aqua, binaries on github, ... and it tries to verify signatures and all that (if supported by the repo the data comes from).

I replaces the entire autofix workflow with mise tooling and tasks, just to give it a try :-)

To reproduce:

> cargo install mise # to get the tool itself

# Follow the necessary step
# https://mise.jdx.dev/installing-mise.html#shells
# to intergate into your shell

> cd /your/slint/folder

# Mise will now ask whether or not to trust this dir and prints the
# command needed to do so. Run that.

> mise install # Install all the tools defined in .mise/config.toml

# Add a .mise.local.toml with local overrides. Git will ignore this file.
# Or add tasks into .mise/tasks/local ... Git will also ignore those.

> mise run 'ci:autofix:**:all' # To run all the tasks in `.mise/tasks/ci/autofix/*` that are called `all`.

It is so much faster to see these checks fail locally than it is to bother CI with them :-)

This could easily be extended with more formats and checks (e.g. taplo for TOML formatting or actionlint for linting github workflows) as it is trivial to grab the tool in the expected version.

This should also lent itself pretty well co git commit hooks ;-)

[hunger]

Hmmm... Its building clang-format in CI. That takes AGES :-(

It should be cached for the next time, but I think we should better use clang-format packages :-)