chore: Repository Cleanup

[LekoArts]

Description

For the PR #37009 I wondered why renovate is changing the lockfile version from v2 to v1. It's using an older npm version it seems. So let's try adding a .nvmrc file.

But I figured cleaning up the monorepo a bit won't hurt so here are the changes in addition to that:

• Remove svgo pipeline since we now rarely add .svg files (this was relevant for the website)
• Remove remark pipeline since we don't cover/care about this at all in our PR process
• Remove old scripts that are no longer used
• Remove plop and plop-templates since we didn't use this for any new packages at all
• Remove i18n scripts
• Random updates like removing old comments in dotfiles, removing deprecated-packages in dotfiles

Related Issues

[ch58168]

[tyhopp]

Looks good to me, will approve but not merge since some of this stuff is before my time and might benefit from another pair of eyes