SDK / exoplayer

In ASwB, all Transformer tests can be run by right-clicking on the project and
clicking "Run all tests". We cannot, however, select only some specific test
files within a project (ex. all non-analysis tests) to run tests on.

Add @Ignore to analysis tests, which are not intended to be run anyways
when determining whether Transformer is working on some device. These
tests also don't have proper skipping logic when a device doesn't support a
format, so they can't be run effectively on low-end devices anyways.

This eases manual testing, for example when debugging whether tests all pass
on a device.

When analysis tests are desired to be run, it should be easy to comment out
the @Ignore.

PiperOrigin-RevId: 527289600