Major Clean Up & Reorg

[LakshmiKumar23]

• Moves all python tests from rocAL_pybind/examples to tests/python_api
• Renames all python and cpp api tests by removing prefix rocal_ for every file
• Moves image_augmentation example to tests/cpp_api/image_augmentation with all other cpp tests
• Removes all reference of MIVisionX and rocAL shipped as part of it
• Corrects all github links to reflect the new ROCm organization
• Clean up of all docs to reflect all of the above.
• Removes MLPerf example (private repos) and links to resnet50 training with rocAL
• Removes -DROCAL=OFF from MIVisionX builds to be compatible with latest MIVisionX changes
• Adds a dockerfile for Tensorflow which was missing in this repo but was present in MIvisionX repo
• Updates docs with correct instructions to build rocal_pybind @kiritigowda can you check all the document changes @paveltc @SundarRajan28 @swetha097 @fiona-gladwin Can you all run the cpp and python tests to make sure nothing broke?

I have tested the python and cpp tests on navi21 with rocm6.1

[SundarRajan98]

@LakshmiKumar23 Tested the C++ tests with this PR. Basic tests are failing but merging with #119 fixes the errors. Other C++ tests are running fine.