feat(store): add support for standalone APIs in schematics

[dmitry-stepanenko]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ngxs/store/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

Adding support for standalone APIs in schematics

With this PR ng-add will be able to add NGXS plugins both to root module as modules and to app.config as provider functions.

Please note that there's a new folder packages/store/schematics/src/utils/ng-utils. It contains files that were copied from the @schematics/[email protected] package. It contains very convenient utils that allow adding declarations both in standalone and regular Angular apps. There's no point to reinvent the bicycle and try to implement that functionality ourselves as we will be able to use them directly from @schematics/angular as we'll start to support the v17 as the minimum required version.

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[nx-cloud]

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✅ Successfully ran 4 targets

• nx run-many --target=test --all --configuration=ci --base=remotes/origin/master --head=HEAD
• nx run-many --target=lint --all --configuration=ci --base=remotes/origin/master --head=HEAD
• nx run-many --target=build --all
• nx build store

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[bundlemon]

BundleMon (Integration Projects)

Unchanged files (1)

Status	Path	Size	Limits
✅	Main bundles(Gzip) hello-world-ng15/dist-integration/main.(hash) .js	63.35KB	+1%

No change in files bundle size

Final result: ✅

View report in BundleMon website ➡️

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Current branch size history | Target branch size history

[markwhitfeld]

@dmitry-stepanenko There has been a large drop on test coverage in this PR. I think that this is a result of the code that was copied across.
Please could you either add some tests (maybe if there are some tests to copy too), or find a way to exclude these folders from the test coverage metrics.

[dmitry-stepanenko]

@markwhitfeld I've excluded the utils folder in .codeclimate.yml and it now shows a single .ts file within ratings section as expected. However, it still tries to calculate the coverage with those excluded files. Any ideas? Maybe I can try to push the change to the config in a separate PR and then recreate this one?

[codeclimate]

Code Climate has analyzed commit 8762ca9 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 72.9% (50% is the threshold).

This pull request will bring the total coverage in the repository to 94.9% (-0.5% change).

View more on Code Climate.