feat(yarn-plugin-ignore): Yarn plugin implementing the ignore: protocol

[tido64]

Description

Yarn plugin implementing the ignore: protocol

Test plan

Verify that node-gyp gets linked to the stub:

% ls node_modules/.store/fsevents-npm-2.3.3-ce9fb0ffae/node_modules/
total 0
fsevents@ -> ../package
node-gyp@ -> ../../../.generated/@rnx-kit/yarn-plugin-ignore-stub

Test coverage:

% yarn test --coverage
▶ IgnoreFetcher
  ✔ supports `ignore:` protocol (0.758375ms)
  ✔ returns `null` local path (0.077875ms)
✔ IgnoreFetcher (1.390375ms)
▶ IgnoreResolver
  ✔ supports `ignore:` protocol (0.830167ms)
  ✔ does not persist resolution (0.057875ms)
  ✔ binds descriptor (0.162708ms)
  ✔ returns no dependencies (0.423ms)
  ✔ returns one candidate (0.124292ms)
  ✔ returns the one candidate as satisfying (0.128334ms)
  ✔ resolves the stub (0.177792ms)
✔ IgnoreResolver (2.538167ms)
▶ stub package
  ✔ contains a valid manifest (0.825625ms)
  ✔ contains a valid main file (35.859875ms)
✔ stub package (37.291667ms)
✔ test/helper.ts (276.47275ms)
ℹ tests 12
ℹ suites 3
ℹ pass 12
ℹ fail 0
ℹ cancelled 0
ℹ skipped 0
ℹ todo 0
ℹ duration_ms 303.278917
ℹ start of coverage report
ℹ ---------------------------------------------------------------------
ℹ file                 | line % | branch % | funcs % | uncovered lines
ℹ ---------------------------------------------------------------------
ℹ src                  |        |          |         |
ℹ  constants.ts        | 100.00 |   100.00 |  100.00 |
ℹ  IgnoreFetcher.ts    |  46.67 |   100.00 |   66.67 | 21-44
ℹ  IgnoreResolver.ts   | 100.00 |   100.00 |  100.00 |
ℹ ---------------------------------------------------------------------
ℹ all files            |  81.95 |   100.00 |   91.67 |
ℹ ---------------------------------------------------------------------
ℹ end of coverage report

[JasonVMo]

Some notes on the resolver portion.