[clang] Add table to track OpenMP 5.2 Support; Update status of task graph (PR #158322)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ppc64le-flang-rhel-clang` running on `ppc64le-flang-rhel-test` while building `clang` at step 6 "test-build-unified-tree-check-flang".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/157/builds/39736

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-build-unified-tree-check-flang) failure: 1200 seconds without output running [b'ninja', b'check-flang'], attempting to kill
...
PASS: Flang :: Transforms/dlti-dependency.fir (3796 of 3806)
PASS: Flang :: Transforms/constant-argument-globalisation.fir (3797 of 3806)
PASS: Flang :: Transforms/tbaa3.fir (3798 of 3806)
PASS: Flang :: Transforms/tbaa4.fir (3799 of 3806)
PASS: Flang :: Transforms/stack-arrays.f90 (3800 of 3806)
PASS: Flang :: Transforms/tbaa-local-alloc-threshold.fir (3801 of 3806)
PASS: Flang :: Driver/use-module.f90 (3802 of 3806)
PASS: Flang :: Lower/OpenMP/rtl-flags.f90 (3803 of 3806)
PASS: Flang :: Driver/omp-driver-offload.f90 (3804 of 3806)
PASS: Flang :: Intrinsics/math-codegen.fir (3805 of 3806)
command timed out: 1200 seconds without output running [b'ninja', b'check-flang'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=2891.269609

```

</details>

https://github.com/llvm/llvm-project/pull/158322