Pegasus DRC & LVS

[harrisonliew]

New Pegasus DRC & LVS plugins.
Tested with a Sky130 design (TinyRocket) using the decks from the preliminary Cadence PDK.
I have not yet gone through the errors and debugging flow, but the GUI debugger is fully setup (though one must read the readme first).

Related PRs / Issues

Type of change:

• Bug fix
• New feature
• Other enhancement

Impact:

• Change to core Hammer
• Change to a Hammer plugin
• Other

Contributor Checklist:

• Did you set master as the base branch?
• Did you state the type-of-change/impact?
• Did you delete any extraneous prints/debugging code?
• (If applicable) Did you add documentation for the feature?
• (If applicable) Did you update the poetry.lock file if you updated the requirements in pyproject.toml?
• (If applicable) Did you add a unit test demonstrating the PR?
• (If applicable) Did you run this through the e2e integration tests?
• (If applicable) Did you update the submodules in e2e/ if this feature depends on updated plugins?

[nayiri-k]

I tested this in the hammer e2e flow w/ pass and gcd modules and drc/lvs batch and gui mode work & the results look sane.