Capture from multiple Magewell USB devices on the same host

[vmdocua]

Tasks:

• Check possibility to run multiple reprostim-videocapture processes in the same host against different devices and make sure that Magewell SDK MWCaptureInitInstance/MWCaptureExitInstance support this and don't need in exclusive access to API (Note: on dev environment we have only single USB device, so first instance was bound to real hardware and second one was configured to some possible hardware during these tests).
• Introduce optional instance_tag in config.yaml to uniquely identify capture tool setup in certain environment, provide ability to specify it explicitly or to be automatically calculated based on execution context (utility name, device s/n, configuration path).
• Inject instance_tag data into the ffmpeg command line and make sure that process termination logic kills only related ffmpeg process instances and not system wide ones as it was originally.
• Release and deploy reprostim-videocapture 1.11.0.385 build to reproiner box.

Closes #202

[github-actions]

🚀 PR was released in 0.7.22 🚀