feat(dom-spectator): add query with root opt for Type selector

[GuillaumeNury]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ngneat/spectator/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?

When using spectator.query(), you can use { root: true } in order to query an element inside an overlay. But what if you want to query a SomeModalContentComponent inside an overlay ?

You cannot do spectator.query(SomeModalContentComponent, { root: true }).

Issue Number: 0

What is the new behavior?

You can now query for components in a global way with spectator.query(SomeModalContentComponent, { root: true }).

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[NetanelBasal]

please add tests.

[GuillaumeNury]

@NetanelBasal is it enough ? I am not sure whether or not I should create a new test file.