chore: add just test task

[estensen]

No description provided.

[estensen]

think it's better that just test tests all packages than this, but open for other suggestions on what to call it

[thedevbirb]

If you want you can have a command for them all!

# Run tests in all packages or a specific package
test package='': 
    @if [[ "{{package}}" == "" ]]; then \
        just test-package bolt-cli; \
        just test-package bolt-boost; \
        just test-package bolt-sidecar; \
    else \
        just test-package {{package}}; \
    fi

Make sure this works, I know it is possible but this is gpt-generated :D

[estensen]

ty, it worked