Fix CI: install libclang for RocksDB compilation

bindgen requires libclang to compile RocksDB C++ bindings.
Added installation step with support for multiple Linux distributions.

Author: xlc

.github/workflows/test.yml

@@ -23,6 +23,12 @@ jobs:
     - uses: actions/checkout@v4
     - name: Install toolchain
       uses: dtolnay/rust-toolchain@nightly
+    - name: Install clang
+      run: |
+        apt-get update && apt-get install -y libclang-dev clang || \
+        apk add --no-cache libgcc clang-dev || \
+        echo "Using pre-installed clang"
+      continue-on-error: true
     - name: Check format
       run: cargo fmt --check
     - name: Run clippy