Update .gitignore to exclude test files and temporary artifacts

- Add patterns for test-* files (ubuntu, bootc, proper, fixed, final, enhanced)
- Add *.raw.tmp for temporary raw image files
- Exclude various test output formats (.raw, .qcow2, etc.)
- Keep repository clean from development artifacts

.gitignore

@@ -26,11 +26,19 @@ test-*.qcow2
 test-*.vmdk
 test-*.iso
 test-*.ami
+test-*.raw
+test-ubuntu-*
+test-bootc-*
+test-proper-*
+test-fixed-*
+test-final-*
+test-enhanced-*
 
 # Temporary files
 *.tmp
 *.temp
 /tmp/
+*.raw.tmp
 
 # Logs
 *.log