[llvm] [clang] [HLSL] Implementation of tan intrinsic (PR #79948)

[Farzon Lotfi via cfe-commits]

farzonl wrote:

Test results:
```
Total Discovered Tests: 93648
  Skipped          :    56 (0.06%)
  Unsupported      :  2502 (2.67%)
  Passed           : 90779 (96.94%)
  Expectedly Failed:   204 (0.22%)
  Failed           :   107 (0.11%)
```

Of the test I added all are passing:
<img width="772" alt="image" src="https://github.com/llvm/llvm-project/assets/1802579/83e15c37-d2ae-4cf8-bd18-316b56da1c8d">


https://github.com/llvm/llvm-project/pull/79948