Marked as WIP since it depends on !8175 for the test to run reliably (and currently includes its commits).
Tests should be run both with HKCU\Software\Wine\MediaFoundation\DisableGstByteStreamHandler enabled and disabled.
-- v3: mfsrcsnk: Support thinning. winedmo: Support thinning. winegstreamer: Support thinning in media source. winegstreamer: Support thinning in wg_parser. mf: Support thinning in media session. mf/tests: Add tests for thinning.