feat: Emit more int comparison operators

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 82.86%. Comparing base (a35ae75) to head (dbc7064).

Files	Patch %	Lines
src/custom/int.rs	0.00%	0 Missing and 7 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #47 +/- ## ========================================== - Coverage 83.12% 82.86% -0.26% ========================================== Files 16 16 Lines 2234 2241 +7 Branches 2234 2241 +7 ========================================== Hits 1857 1857 Misses 246 246 - Partials 131 138 +7 ``` | [Flag](https://app.codecov.io/gh/CQCL/hugr-llvm/pull/47/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CQCL) | Coverage Δ | | |---|---|---| | [rust](https://app.codecov.io/gh/CQCL/hugr-llvm/pull/47/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CQCL) | `82.86% <0.00%> (-0.26%)` | :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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