Rust: Have ExtractionConsistency.ql report both.

Author: geoffw0

rust/ql/consistency-queries/ExtractionConsistency.ql

@@ -1,3 +1,5 @@
 import codeql.rust.Diagnostics
 
 query predicate extractionError(ExtractionError ee) { any() }
+
+query predicate extractionWarning(ExtractionWarning ew) { any() }