Add python 3.11 support

[frmdstryr]

This updates the code generator/compiler to work with Python 3.11, it builds on the pegen branch because the main branch just fails due to invalid col offsets in the ast.

• It seems like the python docs are wrong with MAKE_FUNCTION as there is now no need to push a qualname (https://github.com/python/cpython/issues/93270).
• Since POP_BLOCK was removed, I'm not sure if try_squash_raise can still be implemented?
• There is still a weird problem with decl funcs with default args. Inspect shows the signature is correct and funchelper shows the correct number of defaults but for some reason it does not use the defaults?

On a positive note I get about a 10-15% speedup with this on enaml-web :).

[codecov-commenter]

Codecov Report

Merging #514 (57d3515) into main (052cd81) will increase coverage by 0.19%. The diff coverage is 95.92%.

:exclamation: Current head 57d3515 differs from pull request most recent head 7564bb3. Consider uploading reports for the commit 7564bb3 to get more accurate results

:mega: This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #514 +/- ## ========================================== + Coverage 73.22% 73.41% +0.19% ========================================== Files 296 296 Lines 25837 26001 +164 Branches 3650 4401 +751 ========================================== + Hits 18918 19088 +170 + Misses 5834 5826 -8 - Partials 1085 1087 +2 ```

[MatthieuDartiailh]

Could you rebase this on main now that #474 is in ? (Cherry picking your changes might be easier) Also I apologize for the last two commits, I forgot to switch branch.

[MatthieuDartiailh]

So I have an implementation for try_squash_raise. I just need to audit the usages to ensure we never have a try/except inside the try_squash_raise.

I will look at the kwarg default next.

[MatthieuDartiailh]

Thanks for rebasing. I will push my solution for try_squah_raise later today. The issue with function default lies in CPython itself. PyEval_EvalCodeEx started using _PyFunction_FromConstructor in 3.11 but this function does not pass the defaults found in the frame constructor... I will open an issue on CPython repo.

[MatthieuDartiailh]

CPython issue reported at https://github.com/python/cpython/issues/101072

[MatthieuDartiailh]

Still blocked on the CPython issue, the PR I made is pending review.

[MatthieuDartiailh]

The cpython issue has been closed and the fix will be in 3.11.2 ! I will try to have everything ready by then.

[MatthieuDartiailh]

3.11.2 is available on GHA (I misremembered the release date), let's see if it works !

[frmdstryr]

Looks like it still is using 3.11.1

[MatthieuDartiailh]

Yes and I find it extremely annoying ! We will have to wait a tiny bit longer it seems.

[MatthieuDartiailh]

Thanks for your work @frmdstryr

[frmdstryr]

Thank you!