Added D3D11VA decoder

Just a formal merge request, because the decoder is just a copy of the DXVA2 decoder with two other options set

changed milestone to %v0.1-stable

added P3: Regular feature labels

requested review from @sdcieo0330

assigned to @sdcieo0330

added 1 commit

• 6643e4d0 - Fixed an error with CMake config

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approved this merge request

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merged

The failing pipeline wasn't an issue with the code or build files, the build process just had the wrong macros set, for whatever reason. But the pipeline on main after merge succeeded, so everything is fine