Add and install Texliveonfly tool for automatic LaTex package installation.

Add dependencies for texliveonfly: `python` and `python-is-python3`.
The inclusion of `python-is-python3` is necessary as texliveonfly requires the "python" executable instead of "python3".

Added LaTex Workshop recipes and integrated texliveonfly.
Includes two recipes: one using the default compiler and the other utilizing lualatex.