chore: adjust gitignore for generated IG

Author: gbeskers

.gitignore

@@ -84,4 +84,14 @@ temp/
 # Sushi
 output/
 fsh-generated/
-publisher.jar
+publisher.jar
+
+# IG generation
+_build.bat
+_build.sh
+_gencontinuous.bat
+_gencontinuous.sh
+_genonce.bat
+_updatePublisher.bat
+input-cache/
+template/