* Expose a 'decky_plugin' module to decky plugins

* expose decky user home path
* support 'py_modules' python modules in plugins
* allow for a '_migration' method in plugins to have an explicit file
  moving step

* Expose the plugin python module as .pyi stub interface

* Expose system and user python paths to plugins

* Add lint job to build workflow

* Add prettier-plugin-import-sort

* Install prettier plugins before linting

* Use lint script from package.json

* Move linters to separate workflow

* Remove Python and Shell linters

* Remove popd

* Test that prettier properly fails the lint job

* Remove .desktop file from build.yml

* Make download button link to decky-installer repo

* Point download button to the .desktop file not the .sh file 

woops

* Delete decky_installer.desktop

* Delete user_install_script.sh