feat(ci): valgrind check for memory leaks (DONT UPDATE OR REBASE)

[wdconinc]

Briefly, what does this PR introduce?

This adds a new ci check that runs valgrind on the main geometries, and fails out if non-suppressed errors are found. It also prints out the additions to the suppressions file that would be required if it turns out that the error is a false positive.

This branch is intentionally on a non-updated main so it should be able to fail due to a known memory leak that was since fixed.

What kind of change does this PR introduce?

• [ ] Bug fix (issue #__)
• [x] New feature (issue #__)
• [ ] Documentation update
• [ ] Other: __

Please check if this PR fulfills the following:

• [ ] Tests for the changes have been added
• [ ] Documentation has been added / updated
• [ ] Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

No.

Does this PR change default behavior?

No.

[rahmans1]

@wdconinc Is this going in for February?

[wdconinc]

@wdconinc Is this going in for February?

This is a CI feature. Irrelevant for production and won't go in soon due to not completed.