fix: remove fake test.dmp, add dump_files/ to gitignore

Author: FlorentinoJink

.gitignore

@@ -9,6 +9,8 @@ target
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
 *.7z
+__pycache__/
+dump_files/
 .kiro/*
 
 # Generated by cargo mutants