Update .gitignore to ignore Rust workspace build artifacts

Add patterns to ignore target/ and Cargo.lock in Rust sub-crates
(e.g., rust/links-notation-macro/).

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: konard

.gitignore

@@ -334,6 +334,8 @@ ASALocalRun/
 
 # rust
 rust/target/
+rust/**/target/
+rust/**/Cargo.lock
 target/venv/
 .venv/
 venv/