[PATCH v5 0/4] MR10126: mf: Implement Scrubbing in SAR.

[Brendan McGrath (＠redmcg)]

This MR adds the `IMFPresentationTimeSource` interface to SAR and adds support for scrubbing.

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  v5: mf: Report requested seek time until seek is complete.
      mf: Implement Scrubbing in SAR.
      mf: Check provided presentation clock has a time source.
      mf: Implement presentation time source for SAR.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10126