Reintroduce "Move old ImageDecoder to legacy module and make the nvImageCodec based ImageDecoder the default"

[jantonguirao]

Category:

Other Replaces default ImageDecoders with the nvImageCodec based implementations.

Description:

• Replaces default ImageDecoders with the nvImageCodec based implementations.
• Move former default decoders to a legacy module

Additional information:

Affected modules and functionalities:

• ImageDecoder*

Key points relevant for the review:

Tests:

• [x] Existing tests apply
• [ ] New tests added
  • [ ] Python tests
  • [ ] GTests
  • [ ] Benchmark
  • [ ] Other
• [ ] N/A

Checklist

Documentation

• [x] Existing documentation applies
• [ ] Documentation updated
  • [ ] Docstring
  • [ ] Doxygen
  • [ ] RST
  • [ ] Jupyter
  • [ ] Other
• [ ] N/A

DALI team only

Requirements

• [ ] Implements new requirements
• [ ] Affects existing requirements
• [x] N/A

REQ IDs: N/A

JIRA TASK: N/A