fix(store): adjust mock store to handle selectors with props

[alex-okrushko]

PR Checklist

Please check if your PR fulfills the following requirements:

• [c] 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?

[x] 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?

Mock store doesn't handle selectors with props

Closes # #1864

What is the new behavior?

Fixed it

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

Refactored Mock Store tests out of store/spec
Added Bazel for it
Moved store/spec/fixtures into its own Bazel module
Added a number of tests for Mock Store
Added clean-up logic for Mock Store tests

[ngrxbot]

Preview docs changes for 28c718d at https://previews.ngrx.io/pr1878-28c718d/

[ngrxbot]

Preview docs changes for 555eaec at https://previews.ngrx.io/pr1878-555eaec/