feat(ct): add mount support for template strings

[chronospatian]

This PR adds support for mounting Angular components via a template string. This enables a number of additional test cases:

1. Testing content projection via ng-content
2. Testing directives
3. Testing pipes
4. Testing component boundaries

Mount has been extended with the following additional options:

imports - If a string template is passed to mount, imports are passed to WrapperComponent imports. If a component is passed to mount, imports are passed to TestBed.configureModule. It is done this way to prevent users from adding new declarables to the component's scope.

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The intention behind adding the following options is to enable testing all of the component's boundaries. They are not needed for mounting template strings.

environmentProviders - Passed to TestBed.configureModule for top level providers that should exist outside of the component injector, such as provideStore from ngrx.

providers/viewProviders - Passed to TestBed.overrideComponent intended for stubbing component level providers.

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This PR also contains a number of fixes for the mount function so that it reuses the root element given by Playwright and properly maps aliased component outputs.

[chronospatian]

See the following test files for example usages:

tests/components/ct-angular/tests/providers.spec.ts
tests/components/ct-angular/tests/slots.spec.ts
tests/components/ct-angular/tests/template.spec.ts

[chronospatian]

For template string compilation to work, the code must be compiled in JIT mode.

[sand4rt]

Hi @chronospatian, thanks for your effort. However, we previously decided to hold off on supporting template/imports/providers until the library is merged. Otherwise, we risk continually adding features and delaying the merge indefinitely. So, I'm closing this for now.

[chronospatian]

All good, hope it gets merged soon 👍