cli: allow test coverage, module mocks, and snapshots in `NODE_OPTIONS`

[JakobJingleheimer]

After asking the @nodejs/test_runner team, there does not appear to be a particular reason these are not already included.

[JakobJingleheimer]

No I didn't…

[ljharb]

@JakobJingleheimer ffr the api request to change github labels is done as a "here's all the labels this issue has" request, not a delta, so there was a race condition between you and the bot. the bot said "it's just these 2!" and you said "it's just this 1!".

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.00%. Comparing base (d5d1e80) to head (df9e99c). Report is 447 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #56114   +/-   ##
=======================================
  Coverage   88.00%   88.00%           
=======================================
  Files         656      656           
  Lines      189002   189002           
  Branches    36003    36000    -3     
=======================================
+ Hits       166335   166338    +3     
- Misses      15838    15839    +1     
+ Partials     6829     6825    -4     

Files with missing lines	Coverage Δ
src/node_options.cc	87.55% <100.00%> (ø)

... and 28 files with indirect coverage changes

[JakobJingleheimer]

I have no idea why only some flags are allowed in NODE_OPTIONS, and I can't find anyone who knows.