chore(infra): add project dir path fn

[Itay-Tsabary-Starkware]

Stack:

• chore(tests_integration): replace run with build and direct invocation #2270
• chore(sequencer_node): replace run node shell command #2266
• chore(sequencer_node): compile the node, not the entire project #2265
• chore: add shell command builder #2264
• chore(infra): add project dir path fn #2255 ⬅
• chore(infra): canonicalize path resolution #2254

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

[reviewable-StarkWare]

This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 85.71%. Comparing base (4d734eb) to head (21525e8).

Files with missing lines	Patch %	Lines
crates/infra_utils/src/path.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##           spr/main/c2547652    #2255      +/-   ##
=====================================================
+ Coverage              77.34%   85.71%   +8.37%     
=====================================================
  Files                    385        1     -384     
  Lines                  40296       21   -40275     
  Branches               40296       21   -40275     
=====================================================
- Hits                   31165       18   -31147     
+ Misses                  6828        3    -6825     
+ Partials                2303        0    -2303     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles

[ArniStarkware]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @Itay-Tsabary-Starkware)

[Itay-Tsabary-Starkware]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @Itay-Tsabary-Starkware)

[Itay-Tsabary-Starkware]

✓ Commit merged in pull request #2264