feat(environment): add package->application-environment for single-app environments

fix(environment): actually support rename-=unction for renaming binaries

fix(environment): check directory exists before copying files

feat: emacs sets PATH to prepend emacs it's starting to PATH

fix: ripgrep-all package

feat: use new rust packaging with ruther packages

fix: get rid of all gnu packages crates- uses

fix: get rid of all gnu packages crates- uses

fix: get rid of obsolete module, packages

fix: import modules for warning in rust-crates

fix: add missing ruther modules

feat: Replace original paths in extra files with the ones in environment

This is for example usable for share/application desktop files, to
point to the environment binary instead of the original binary.
Then the program will be started with environment from the environment
package.

feat: add make-interpreted-environment

Add easy way for creating an environment with an interpterer,
and expose make-python-environment and make-guile-environment

feat: some updates

feat: Add make-environment

A procedure to make a package that encapsulates a profile.
This is to stop the propagation of propagated-inputs into a profile.
As an example, multiple python library versions can be used like this
inside of one profile, where each python library version is
encapsulated in a separate environment.

chore: formatting ripgrep-all

chore: Use gexp in dwlmsg

guix-shared-cache-service-type: Fix unbound variable

guix-shared-cache-service-type: Fix unbound variable

Improve shared guix cache

- Add -o nonempty option to make sure the service can run even with
users that already have a cache
- Rename the config with -config suffix