feat(utils): publicly expose utils related to eslint-plugin

[JamesHenry]

FYI @rafaelss95 this is a significant internal refactor. The utils package going beyond testing utils happened sooner than I thought 😁

I'm fortunate to be dogfooding this at work right now writing some workspace specific lint rules using these utils.

We obviously have v13 coming up too so we can always make some breaking changes to these groupings and import paths if we need to.

I will be following up with a similar PR for the template related utils

[nx-cloud]

Nx Cloud Report

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Status	Command
	nx run-many --target=integration-test --all --withRegistry
	nx run-many --target=typecheck --all --parallel
	nx run-many --target=test --all --parallel
	nx run-many --target=check-rule-docs --all --parallel
	nx run-many --target=build --all --parallel
	nx run-many --target=check-configs --all --parallel
	nx run-many --target=test --all --parallel
	nx run-many --target=build --all --parallel

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[codecov]

Codecov Report

Merging #676 (4ff6ca8) into master (34e5523) will decrease coverage by 0.28%.
The diff coverage is 98.46%.

@@            Coverage Diff             @@
##           master     #676      +/-   ##
==========================================
- Coverage   85.89%   85.60%   -0.29%     
==========================================
  Files          89       83       -6     
  Lines        2502     1924     -578     
  Branches      444      337     -107     
==========================================
- Hits         2149     1647     -502     
+ Misses        207      168      -39     
+ Partials      146      109      -37     

Impacted Files	Coverage Δ
...nt-plugin/src/rules/no-inputs-metadata-property.ts	100.00% <ø> (ø)
...t-plugin/src/rules/no-outputs-metadata-property.ts	100.00% <ø> (ø)
packages/eslint-plugin/src/rules/no-pipe-impure.ts	100.00% <ø> (ø)
.../eslint-plugin/src/rules/prefer-output-readonly.ts	100.00% <ø> (ø)
...t-plugin/src/rules/use-pipe-transform-interface.ts	91.66% <ø> (ø)
...es/eslint-plugin/src/rules/contextual-decorator.ts	72.00% <33.33%> (ø)
.../eslint-plugin/src/rules/component-class-suffix.ts	92.85% <100.00%> (-0.48%)	⬇️
...gin/src/rules/component-max-inline-declarations.ts	80.00% <100.00%> (-0.56%)	⬇️
...ages/eslint-plugin/src/rules/component-selector.ts	88.23% <100.00%> (-0.66%)	⬇️
...es/eslint-plugin/src/rules/contextual-lifecycle.ts	95.23% <100.00%> (-0.22%)	⬇️
... and 44 more

[rafaelss95]

Nice! I'll try to take a look at this later today or tomorrow to see what could be improved (mainly making things more flexible since they were created for this specific project) to take advantage of the v13 migration window.