In case the scoped registry polyfill is loaded we need to create
elements inside of the shadowroot.

getShadowRootDocument() returns the polyfilled shadowroot, or in case
the polyfill is not loaded just return the global document, which works
in case there are no scoped registries.

In case we get something like https://github.com/open-wc/open-wc/pull/2389
this will be usefull. Also it makes IDE completion work + eslint.

This combines URLs similar to an URL join, but assumes the
base URL is the root path instead of the host.

This is useful for combining API paths with API server entry points.

Instead of using the namespace which is hardcoded we use the tag name that was
used to register the element (or the "real" tag name in case of a scoped element).

This way if AppShell is regsitered as "dbp-some-app" it can still be overriden by
specifying "dbp-some-app" in the overrides object.

Create a new instance with createInstance() and call setOverrides()
with override data to override translations.

See the tests for some examples.

This has proper support for rollup while providing the same API.

This is what open-wc recommends now and uses in their @open-wc/testing package

This way we can change the full path/namespacing at a later point.

We now expect the users to pass the right config to vpu-auth.
Only the API endpoint config remains which we haven't figured out
how to deal with in all cases.

We no longer need to support old edge, so we can just use
import.meta.url everywhere which doesn't any initialization.

In case we try to register the element multiple times under the same name
just do nothing. This allows us to not register things by default and
register under the same name in multiple places where needed without
coordination.

These allow linking multiple AbortControllers and ceate a timeout abort signal.

For example in case you want to abort a fetch in case

(1) the UI element gets removed
(2) a newer request replacing this one gets started
(3) a timeout happens because the fetch takes too long

createLinkedAbortController() allows merging multiple signals into one
and createTimeoutAbortSignal() allows creating a singal that auto aborts
after some time passes.

This generalizes the features of the events module and should replace it in the long run.

It allows simple pub/sub and retained events without a centralized instance.

While this will never work with old Edge it makes things easier during testing
where we can't set an id on the script tag. And we still don't know if supporting
old Edge is even needed.

This splits things into two phases, initAssetBaseURL() will try to set
a module wide base url for all assets.

The first code to use it successfully will define the asset base url for
all future getAssetURL() calls.

So that rollup can do tree shaking and report import errors.