Adds new abstraction `Compiler` with methods
`compileComponentAsync` and `compileComponentSync`.
This is in preparation of deprecating `ComponentResolver`.
`compileComponentSync` is able to compile components
synchronously given all components either have an inline
template or they have been compiled before.
Also changes `TestComponentBuilder.createSync` to
take a `Type` and use the new `compileComponentSync` method.
Also supports overriding the component metadata even if
the component has already been compiled.
Also fixes#7084 in a better way.
BREAKING CHANGE:
`TestComponentBuilder.createSync` now takes a component type
and throws if not all templates are either inlined
are compiled before via `createAsync`.
Closes#9594
Tobias Bosch