win-dshow: Set audio devices to OBS sample rate

[prgmitchell]

Description

Pass the configured OBS sample rate to libdshowcapture when configuring DirectShow audio devices to prevent devices from silently using their default sample rates.

Depends on obsproject/libdshowcapture#33

Motivation and Context

Common issue in support, current requires a workaround of muting the dshow device and adding a separate audio input capture source to load the correct sample rate.

How Has This Been Tested?

Requires testing from others as I don't have a device with a default sample rate of 44.1khz.

Tested with a build sent to others though so I am marking the tested box in the checklist as complete

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have read the contributing document.
• My code has been run through clang-format.
• My code follows the project's style guidelines
• My code is not on the master branch.
• My code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.

[CyBeRoni]

Without this PR:

22:16:52.270: 	video device: AV.io HD Video
22:16:52.270: 	video path: \\?\usb#vid_2b77&pid_3601&mi_01#7&2d02472b&1&0001#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global
22:16:52.270: 	resolution: 1920x1080
22:16:52.270: 	flip: 0
22:16:52.270: 	fps: 60.00 (interval: 166666)
22:16:52.270: 	format: YUY2
22:16:52.270: 	buffering: disabled
22:16:52.270: 	hardware decode: disabled
22:16:52.334: 	using video device audio: no
22:16:52.334: 	separate audio filter
22:16:52.334: 	sample rate: 44100
22:16:52.334: 	channels: 2
22:16:52.334: 	audio type: Capture

with:

22:03:44.662: [DShow Device: 'Video Capture Device'] settings updated: 
22:03:44.662:     video device: AV.io HD Video
22:03:44.662:     video path: \\?\usb#vid_2b77&pid_3601&mi_01#7&2d02472b&1&0001#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global
22:03:44.662:     resolution: 1920x1080
22:03:44.662:     flip: 0
22:03:44.662:     fps: 60.00 (interval: 166666)
22:03:44.662:     format: YUY2
22:03:44.662:     buffering: disabled
22:03:44.662:     hardware decode: disabled
22:03:44.662:     OBS sample rate: 48000
22:03:44.736:     using video device audio: no
22:03:44.736:     separate audio filter
22:03:44.736:     sample rate: 48000
22:03:44.736:     channels: 2
22:03:44.736:     audio type: Capture

Same result when using a custom audio source set to the same device.