Upgrade DELTACAST to native operators

[laurent-radoux]

No description provided.

[Copilot]

Pull Request Overview

This PR upgrades the DELTACAST VideoMaster operators from GXF-based codelets to native Holoscan operators. The conversion removes dependency on the GXF extension system and implements direct operator functionality within the Holoscan framework.

• Converts GXF codelets to native Holoscan operators with standard lifecycle methods
• Removes GXF extension infrastructure and associated build dependencies
• Adds new deltacast_receiver application to demonstrate input functionality

Reviewed Changes

Copilot reviewed 45 out of 46 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
utilities/cli/container.py	Adds duplicate device mount for DELTACAST x370 hardware
operators/deltacast_videomaster/*.hpp	Converts operator headers from GXF to native implementation
operators/deltacast_videomaster/*.cpp	Converts operator implementations with new compute/lifecycle methods
operators/deltacast_videomaster/videomaster_base.*	New base class for shared DELTACAST functionality
gxf_extensions/deltacast_videomaster/*	Removes entire GXF extension codebase
applications/deltacast_receiver/*	Adds new receiver application for video input
applications/deltacast_transmitter/*	Updates transmitter to use native operators
applications/endoscopy_tool_tracking/*	Updates to use native operators

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[laurent-radoux]

Closing PR following creation of PR in NVIDIA repository for reintegration into main.

nvidia-holoscan#1162