IDirect3DRM*::CreateDeviceFrom* tests

[Aaryaman Vasishta]

Testing if pixel format of the render target changes when the mode is
changed: https://testbot.winehq.org/JobDetails.pl?Key=14395
<https://testbot.winehq.org/JobDetails.pl?Key=14356>

All the three tests together:
https://testbot.winehq.org/JobDetails.pl?Key=14403

Please review the code and let me know of any modifications that are
required.

Thank you!
Jam
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