This is in preperation for a seperate runtime container

There will be a seperate shim for runtime, so it's nice to keep them
both together in a single directory.

Fixes the application refusing to launch from KDE or with certain desktop environment configuration.

Fixes 2 issues:
- cmake and cargo are replaced with the shim if the user has ~/.local/bin prepended to their shell PATH
- the installation fails if ~/.local/bin does not exist