test: add escapePOSIXShell util

[aduh95]

In #55028, I've tried to come up with an execNode util, but I couldn't find an implementation that would work for all tests, so I ended up having similar-but-different implementations scattered among several tests. After a bit of soul searching, I realized we could take advantage of string templating and have a util that would escape paths or more when we want to pass them to shell.
Of course, that only works for POSIX shells, where the way we use variables in standardized, however since " is not a valid char in Windows-paths, and paths are (almost?) always the only arbitrary value we pass to shells in tests, it should do just fine.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.24%. Comparing base (0f7bdcc) to head (e0a22b5).
Report is 374 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #55125      +/-   ##
==========================================
- Coverage   88.25%   88.24%   -0.02%     
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  Files         651      651              
  Lines      183856   183863       +7     
  Branches    35854    35827      -27     
==========================================
- Hits       162260   162247      -13     
- Misses      14883    14929      +46     
+ Partials     6713     6687      -26     

see 83 files with indirect coverage changes

[JakobJingleheimer]

🙌 yay for code quality improvements!

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/62844/

[LiviaMedeiros]

This looks neat. I have a few (non-blocking) concerns:

1. Are there plans to change paths on CI machines to something weird, so this issue can be caught immediately? Otherwise we might end up in a situation where new tests will potentially break this again.
2. This utility should probably be documented in the Common module API part. Otherwise searching for good usage example through /test/parallel/ would be a pain: some are using opts implicitly, some explicitly, existence of opts depends on platform. Also, tagged templates aren't very common, so it would be nice to show an usage example.
3. Are there any caveats that should be documented? For example, potentially polluting env with the ESCAPED_#s?

[aduh95]

1. Are there plans to change paths on CI machines to something weird, so this issue can be caught immediately?

Yes

3. Are there any caveats that should be documented? For example, potentially polluting env with the ESCAPED_#s?

🤷‍♂️ I guess we'll find out if that's causing problems, it's hard to foresee.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/62847/

[nodejs-github-bot]

Landed in 99e0d0d