Add LLVM Support

[obelisk]

Maybe LLVM is super fast comparatively. I don't know but I do know I want to find out.

[obelisk]

Getting it to build on macOS was a bit of a challenge. Eventually this is what worked: RUST_LOG=debug RUSTFLAGS="-L /opt/homebrew/lib/" LLVM_SYS_180_PREFIX=/opt/homebrew/Cellar/llvm@18/18.1.8 cargo run --release --no-default-features --features=llvm,sled --bin=plaid -- --config plaid/resources/plaid.toml --secrets plaid/resources/secrets.example.json

[Copilot]

Copilot reviewed 16 out of 22 changed files in this pull request and generated no comments.

Files not reviewed (6)

• modules/Makefile: Language not supported
• modules/tests/test_regex/harness/harness.sh: Language not supported
• runtime/plaid/resources/docker/Dockerfile: Language not supported
• runtime/plaid/resources/docker/musl/Dockerfile.aarch64: Language not supported
• runtime/plaid/resources/docker/musl/Dockerfile.amd64: Language not supported
• testing/integration.sh: Language not supported

Comments suppressed due to low confidence (1)

modules/tests/test_regex/src/lib.rs:17

• The test does not include an assertion to validate the regex match result; consider adding an assertion to verify that the regex behavior matches the expected outcome.

let is_match = regex.is_match(&log);