[OPENCL] Add UR handles to OPENCL adapter

[omarahmed1111]

Redesign Opencl adapter by adding UR handles and get rid of the casting of the UR handles to OPENCL handles.

Intel/llvm testing

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 12.43%. Comparing base (78ef1ca) to head (97dbfd0). Report is 199 commits behind head on main.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1176      +/-   ##
==========================================
- Coverage   14.82%   12.43%   -2.40%     
==========================================
  Files         250      241       -9     
  Lines       36220    36242      +22     
  Branches     4094     4111      +17     
==========================================
- Hits         5369     4506     -863     
- Misses      30800    31732     +932     
+ Partials       51        4      -47     

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[omarahmed1111]

I've not reviewed the whole PR yet. I think we need to run the CTS with the Address Sanitizer enabled to make sure we're not introducing memory leaks.

Used Address sanitizer to check for memory leaks, fixed some in the UR layer here. Some are generated from OpenCL sources so left that, others are generated from UR CTS tests that will be fixed in this PR

[RossBrunton]

Currently taking over this to try to get it merged. I've just rebased it and created an LLVM change.

[martygrant]

Unified Runtime -> intel/llvm Repo Move Notice

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The source code of Unified Runtime has been moved to intel/llvm under the unified-runtime top-level directory, all future development will now be carried out there. This was done in https://github.com/intel/llvm/pull/17043.

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[martygrant]

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[RossBrunton]

This change is now here: https://github.com/intel/llvm/pull/17118/commits/87fe1179c269a044d13b748c5a28a3916167bb5f

I'll recreate an MR in intel/llvm once prerequisites are merged.