Add Pyinstaller Support

[arkrow]

• Not dependent on poetry or plugins like Add PyInstaller & Dynamic Versioning Support #40
• The implemented __version__ approach to read from importlib.metadata.version is not compatible since no metadata is present. This might be addressed in a future commit, but this needs to be manually set for now.

To use, install the project and it's requirements in a venv, along with pyinstaller==6.9.0 and then:

pyinstaller pymusiclooper.spec

Summary by Sourcery

Introduce PyInstaller support by adding a spec file to enable building the project into an executable. This allows users to package the application without relying on poetry or plugins.

New Features:

• Add support for PyInstaller by including a new spec file for building the project into an executable.