Investigate auto-formating frontend code

[GeckoEidechse]

Right now we enforce styling of the backend code via rustfmt.

In order to get front-end styling a bit more consistent we should do the same for .vue and .ts files.

Thing is finding the right tool to do so. I tried just running auto-format in vscode with the Vue extension and it remove manual alignment for some elements which actually made the code harder to read which kinda defeats the point of automatic formatting ^^