Remove Kotlin compiler session file and update .gitignore

Co-authored-by: trask <218610+trask@users.noreply.github.com>

Author: Copilot

.gitignore

@@ -3,6 +3,10 @@
 /buildSrc/.gradle/
 build/
 
+# Kotlin compiler session files
+*.salive
+/.kotlin/
+
 # Intellij
 /.idea/