Add support to reciving open test events and translate them in calls to the API of the new JUnit View

We have the new `org.eclipse.unittest.ui` unit test view that can display unit test results in a vendor agnostic way (e.g. not bound to JUnit specifically).

There is also a [Open Test Reporting](https://github.com/ota4j-team/open-test-reporting) API that also is vendor neutral, so this seems like a perfect fit.

To make integration of both things more convenient for the user we should do the following:

- create a new bundle `org.eclipse.unittest.ui.ota4j`
- create a bridge there that accepts a reader and read events according to the [core.xsd](https://github.com/ota4j-team/open-test-reporting/blob/main/schema/src/main/resources/org/opentest4j/reporting/schema/core-0.2.0.xsd) and [events.xsd](https://github.com/ota4j-team/open-test-reporting/blob/main/schema/src/main/resources/org/opentest4j/reporting/schema/events-0.2.0.xsd)
- translate them into calls of our API to update the view using a Stax Stream reader based approach to keep memory footprint low and to account for the stream based nature of these events.