feat(#2014): Make tests in eo-runtime run in parallel

[volodya-lombrozo]

Make tests in eo-runtime run in parallel.
PhLocated isn't intended to work with multiple compilations simultaneously. Therefore, in order to run it in parallel, we need to make its internal components ThreadLocal.

Tests execution time

• Before: 14.808 s
• After: 10.289 s

Closes: #2014

---

PR-Codex overview

This PR makes several changes to the codebase, including introducing ThreadLocal variables to improve concurrency and fixing a bug in the Vertices class.

Detailed summary

• Introduces ThreadLocal variables for Heaps, PhPackage, and Vertices classes to improve concurrency.
• Fixes a bug in the Vertices class where the primitive method was not being called correctly.
• Updates the EOheap class to use the new Heaps implementation.
• Updates the PhPackage class to use the new ThreadLocal implementation.
• Adds a new test to ensure that attributes can be found concurrently.

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[volodya-lombrozo]

@Graur Could you have a look, please?

[Graur]

@volodya-lombrozo Looks like this flaky test failed. Maybe it would be better to run these checks again?

[volodya-lombrozo]

@yegor256 Could you merge that changes, please?

[yegor256]

@rultor merge

[rultor]

@rultor merge

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@yegor256 Done! FYI, the full log is here (took me 13min)