fix(hugr-py): more ruff lints + fix some typos

[ss2165]

import ruff.toml from guppylang

• turn on more lints
• mostly auto fixes, mostly import sorting

add a config file for typos tool https://github.com/crate-ci/typos?tab=readme-ov-file

• we could consider adding this to CI/pre-commit but don't want to do a big repo-wide change right now
• I used cli typos tool with cargo install typos-cli

coverage is not happy because most of the fixes are in TYPE_CHECKING import blocks or unraised exceptions

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 69.07216% with 30 lines in your changes missing coverage. Please review.

Project coverage is 86.91%. Comparing base (4c6c8cd) to head (5b53d26). Report is 1 commits behind head on main.

:exclamation: Current head 5b53d26 differs from pull request most recent head fb8251a

Please upload reports for the commit fb8251a to get more accurate results.

Files	Patch %	Lines
hugr-py/src/hugr/cond_loop.py	40.00%	6 Missing :warning:
hugr-py/src/hugr/dfg.py	0.00%	6 Missing :warning:
hugr-py/src/hugr/ops.py	60.00%	4 Missing :warning:
hugr-py/src/hugr/cfg.py	62.50%	3 Missing :warning:
hugr-py/src/hugr/node_port.py	62.50%	3 Missing :warning:
hugr-py/src/hugr/exceptions.py	0.00%	2 Missing :warning:
hugr-py/src/hugr/function.py	50.00%	2 Missing :warning:
hugr-py/src/hugr/hugr.py	75.00%	2 Missing :warning:
hugr-py/src/hugr/serialization/serial_hugr.py	83.33%	1 Missing :warning:
hugr-py/src/hugr/serialization/tys.py	95.65%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1246 +/- ## ========================================== - Coverage 87.00% 86.91% -0.09% ========================================== Files 100 99 -1 Lines 19000 19023 +23 Branches 17015 17015 ========================================== + Hits 16530 16533 +3 - Misses 1693 1713 +20 Partials 777 777 ``` | [Flag](https://app.codecov.io/gh/CQCL/hugr/pull/1246/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CQCL) | Coverage Δ | | |---|---|---| | [python](https://app.codecov.io/gh/CQCL/hugr/pull/1246/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CQCL) | `90.58% <69.07%> (-0.90%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CQCL#carryforward-flags-in-the-pull-request-comment) to find out more.

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