docs: introduce schematics

[profanis]

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
[ ] 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?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

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Files updated (1)

Status	Path	Size	Limits
✅	Main bundles(Gzip) hello-world-ng15/dist-integration/main.(hash) .js	63.95KB (+621B +0.96%)	+1%

Total files change +621B +0.96%

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[markwhitfeld]

The command to call the schematics should include the package. Eg:

ng generate @ngxs/store:actions ...

[profanis]

The command to call the schematics should include the package. Eg:

ng generate @ngxs/store:actions ...

It's fixed. Can you please have a look at it?

[codeclimate]

Code Climate has analyzed commit e681ad0 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 95.9% (0.4% change).

View more on Code Climate.

[markwhitfeld]

Great! Approving and merging, but could you add a subsequent PR to clarify the output of the store schematic?
Currently the description in the schematics page doesn't give me a clear idea, and the description of the output on the store page is non-descript.