feat: add some tests for guppy 1q squashing

[CalMacCQ]

1. Added some simple test cases for 1q squashing... See (the guppy_optimization/1q_squash directory)
2. I've also updated the minimal guppy version to 0.21.6 and updated the syntax accordingly (.compile() -> .compile_function()).
3. Finally I've regenerated the hugrs for all files with the new Guppy version. Let me know if I should break up these changes.

[CalMacCQ]

Maybe I should make these angles a bit friendlier. I have included the pytket code below though.

The argument order for the phased X gate should be the same as pytket

[CalMacCQ]

Had some issues generating the HUGRs in my local env. Will try again tomorrow.

[ferbetanzo]

I don't see the lines at the bottom of the .py files to generate the hugr, like in the other test_files/ examples (see below). Was this on purpose?

program = main.compile()
Path(argv[0]).with_suffix(".hugr").write_bytes(program.to_bytes())

[ferbetanzo]

Oh, and also the lines to specify the dependencies to the uv script:

# /// script
# requires-python = ">=3.13"
# dependencies = [
#     "guppylang >=0.21.3",
# ]
# ///

[CalMacCQ]

I don't see the lines at the bottom of the .py files to generate the hugr, like in the other test_files/ examples (see below). Was this on purpose?

program = main.compile()
Path(argv[0]).with_suffix(".hugr").write_bytes(program.to_bytes())

Ah thanks Fernando, I missed that

[acl-cqc]

@CalMacCQ I have indeed pulled out the regeneration of existing examples into #1249 because, erm, the old versions were broken (guppy has since been fixed)...thanks!