Add license and exclude packaging drafts

.gitignore

@@ -0,0 +1,18 @@
+# Rust build output
+/target/
+
+# Local backups and patch leftovers
+*.backup
+*.backup-*
+*.orig
+*.rej
+
+# Editor and operating system files
+*~
+*.swp
+*.swo
+.DS_Store
+Thumbs.db
+
+# Local packaging drafts
+/packaging/