[GIT PULL] CI: Add llvm build test for GitHub action

[ammarfaizi2]

Add llvm build test for GitHub action. Test whether it compiles
successfully with clang. Do it every push and PR event.

Please review.

The following changes since commit 51e1e453cbc9a3ff022fdee5e5f5a4171ee6806a:

  HevConfig: Bump up to 2.6.2. (2023-10-13 21:55:46 +0800)

are available in the Git repository at:

  https://github.com/ammarfaizi2/hev-socks5-server.git master

for you to fetch changes up to 5659e5535ff7c7d8b0e7e444e52521fbcd3f2248:

  CI: Add llvm build test for GitHub action (2023-10-17 07:01:51 +0700)

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Ammar Faizi (1):
      CI: Add llvm build test for GitHub action

 .github/workflows/llvm.yaml | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 .github/workflows/llvm.yaml