Update Rust.gitignore to include rustc-ice files

Add rustc internal compiler error stack trace files to ignore

Rust.gitignore

@@ -13,6 +13,9 @@ target
 # Contains mutation testing data
 **/mutants.out*/
 
+# rustc will dump stack traces when hitting an internal compiler error to PWD
+rustc-ice-*.txt
+
 # RustRover
 #  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore