Expanded test coverage for pnpm lockfile processing

Split from #1924

This PR primarily serves to add test cases to cover the malformed package label generation that #1924 aims to fix, such that the changes in that other PR are more obvious.

Additionally;

Adds .git to .bazelignore (editors see .git when inspecting test logs otherwise)
Fixed typo file -> find in npm/private/npm_translate_lock_generate.bzl
Documented params for _new_package_info in npm/private/pnpm.bzl
Documented and tested _convert_pnpm_v6_v9_version_peer_dep in npm/private/pnpm.bzl
Added tests for v6 and v9 lockfiles covering current behaviour around injected deps (unsupported feature that is non-fatal when used in v6 and now v9)
Remove inlined JSON in favour of Starlark + json.encode in npm/private/test/parse_pnpm_lock_tests.bzl
Added test suite target for //npm/private/test:test_parse_pnpm_lock

Changes are visible to end-users: yes(-ish)

Searched for relevant documentation and updated as needed: yes
Breaking change (forces users to change their own code or config): no
Suggested release notes appear below: no

Test plan

NA, PR is adding new tests with little/no behaviour changes.

Test

2 test targets passed

Targets

//npm/private:_test_gendocs_0_0 [k8-fastbuild]                 52ms
//npm/private:_test_gendocs_0_1 [k8-fastbuild]                 39ms

Total test execution time was 91ms. 204 tests (99.0%) were fully cached saving 39s.

Test

e2e/bzlmod

All tests were cache hits

5 tests (100.0%) were fully cached saving 789ms.

Test

e2e/gyp_no_install_script

All tests were cache hits

2 tests (100.0%) were fully cached saving 169ms.

Test

e2e/js_image_oci

All tests were cache hits

1 test (100.0%) was fully cached saving 8s.

Test

e2e/npm_link_package

All tests were cache hits

3 tests (100.0%) were fully cached saving 920ms.

Test

e2e/npm_link_package-esm

All tests were cache hits

3 tests (100.0%) were fully cached saving 924ms.

Test

e2e/npm_translate_lock

All tests were cache hits

1 test (100.0%) was fully cached saving 27ms.

Test

e2e/npm_translate_lock_empty

All tests were cache hits

1 test (100.0%) was fully cached saving 27ms.

Test

e2e/npm_translate_lock_multi

All tests were cache hits

2 tests (100.0%) were fully cached saving 296ms.

Test

e2e/npm_translate_lock_partial_clone

All tests were cache hits

1 test (100.0%) was fully cached saving 112ms.

Test

e2e/npm_translate_lock_replace_packages

All tests were cache hits

3 tests (100.0%) were fully cached saving 233ms.

Test

e2e/npm_translate_lock_subdir_patch

All tests were cache hits

1 test (100.0%) was fully cached saving 236ms.

Test

e2e/npm_translate_package_lock

All tests were cache hits

1 test (100.0%) was fully cached saving 81ms.

Test

e2e/npm_translate_yarn_lock

All tests were cache hits

1 test (100.0%) was fully cached saving 81ms.

Test

e2e/package_json_module

All tests were cache hits

1 test (100.0%) was fully cached saving 504ms.

Test

e2e/pnpm_lockfiles

All tests were cache hits

40 tests (100.0%) were fully cached saving 3s.

Test

e2e/pnpm_workspace

All tests were cache hits

10 tests (100.0%) were fully cached saving 2s.

Test

e2e/pnpm_workspace_rerooted

All tests were cache hits

12 tests (100.0%) were fully cached saving 3s.

Test

e2e/repo_mapping

All tests were cache hits

2 tests (100.0%) were fully cached saving 493ms.

Test

e2e/rules_foo

All tests were cache hits

2 tests (100.0%) were fully cached saving 153ms.

Test

e2e/runfiles

All tests were cache hits

1 test (100.0%) was fully cached saving 443ms.

Test

e2e/vendored_node

All tests were cache hits

1 test (100.0%) was fully cached saving 171ms.

aspect-build / rules_js