feat(store-devtools): add provideStoreDevtools function

[yharaskrik]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ngrx/platform/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Documentation has 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?

store devtools does not have a provider function and can only be configured via a static instrument function on the module.

Closes #3527

What is the new behavior?

refactor store devtools to export a provider function to go moduleless

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[netlify]

✅ Deploy Preview for ngrx-io canceled.

Built without sensitive environment variables

Name	Link
🔨 Latest commit	05e5d77
🔍 Latest deploy log	https://app.netlify.com/sites/ngrx-io/deploys/63051b12a6ce2b00098c2edb