I am getting that the links to SMT-LIB in
https://cvc5.github.io/docs/cvc5-1.1.2/ no longer work.
This updates the links on main to use a URL that works for me.
We are renaming files in the pythonic API to make it look less like it is somehow part of z3 (but still acknowledge that we took code from z3Py properly). This PR follows the change in cvc5/cvc5_pythonic_api#80.
This PR extends the custom sphinx extension for examples. It now allows for simple patterns in the file names and matches the file types using arbitrary regular expressions instead of just looking at the file extensions. This is necessary to integrate examples from the z3pycompat API: the examples live at a nontrivial place (in the build folder), which we inject via the file name patterns; we will have two separate examples which both end in .py but can be distinguished via the pattern used in the beginning.
