dbSta: check LEF Liberty pin directions

[naveenvenk17]

Summary

• add LEF/LIB-CHK-011 to compare non-supply LEF pin directions with matching Liberty port directions
• skip unmatched Liberty cells/ports and Liberty non-signal directions so LEF-only checks stay quiet
• register a focused pass/fail regression fixture in both Bazel and CMake

Related to #4872.

Tests

• PASS: git diff --check
• PASS: bazelisk build --jobs=4 --local_cpu_resources=4 //src/dbSta:IpChecker
• BLOCKED: bazelisk test --jobs=4 --local_cpu_resources=4 //src/dbSta/test:check_ip_liberty_direction-tcl_test on the Ubuntu 22.04 GCP VM fails before test execution while linking openroad with unresolved __isoc23_* glibc symbols from the Bazel LLVM/sysroot toolchain.

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[maliberty]

skip unmatched Liberty cells/ports and Liberty non-signal directions so LEF-only checks stay quiet

Why? You are assuming all unmatched ports are non-signal but what if they are not?

[naveenvenk17]

Good point. The direction checker should not treat a missing Liberty port as non-signal by itself. I kept this PR scoped to LEF/LIB-CHK-011: once a matching Liberty pin exists, compare LEF and Liberty directions. The missing-LEF-signal-pin case is covered separately in #10821 as LEF/LIB-CHK-012, where LEF supply pins are skipped but LEF signal pins missing from the Liberty cell are warned. So the intended order is #10821 first, then this PR; I can fold #10821 into this branch if you prefer a single combined check.

[naveenvenk17]

Updated this branch on top of current upstream/master to refresh the stale lock/check context, and changed the direction-mismatch diagnostic ID from CHK-120 to CHK-111 so it does not collide with the missing-Liberty-cell/pin diagnostics in #10821.

On the unmatched-port question: this PR now remains scoped to direction comparison only when both LEF and Liberty pins exist; #10821 handles missing Liberty cells/pins as LEF/LIB-CHK-012. Once #10821 lands, this check composes with it instead of treating missing ports as non-signal.

Verified on the VM only:

• $HOME/.local/bin/clang-format --dry-run --Werror src/dbSta/src/IpChecker.cc src/dbSta/include/db_sta/IpChecker.hh
• $HOME/.local/bin/buildifier-v8.2.1 -mode=check -lint=warn src/dbSta/BUILD src/dbSta/test/BUILD
• git diff --check
• Ubuntu 24 Bazel container: bazelisk build //src/dbSta:IpChecker
• Ubuntu 24 Bazel container: bazelisk test //src/dbSta/test:check_ip_liberty_direction-tcl_test
• Ubuntu 24 Bazel container: bazelisk test //src/dbSta/test:all

All 75 dbSta test targets passed.

[maliberty]

I find it harder to read when you split checkLibertyPinPresence and checkLibertyPinDirections with one relying on the invariants of the other. It would be easier to read with the checks combined rather than having to recheck existance and silently skip in a separate check.