DepthAI Demo v1.1.4-sdk - BlobManager updates and minor fixes

[VanDavv]

Features

• In BlobManager, added progressFunc parameter to init method allowing to override default show mechanism and zooType to getBlob method, so that the download from our model zoo is now possible
• Color map used by PreviewManager will use black ([0, 0, 0]) as lowest value, to show a better visual separation between valid and invalid points on the depth preview
• Added createBlankFrame to util methods, allowing to create a blank frame with specified width, height and optionally color

Bugs

• Use numpy 1.21 for Python >3.7
• Removed flipDetection from NNetManager as rectified streams are now flipped on device
• PreviewManager now calls fpsHandler automatically on each received packet

Misc

• Disabled stream encoding in low-bandwidth mode for rectified and disparity streams to prevent OOM issue when too many streams are requested at once

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This discussion was created from the release DepthAI Demo v1.1.4-sdk - BlobManager updates and minor fixes.