add .gitignore

.gitignore

@@ -0,0 +1,22 @@
+# hidden files
+.*
+
+# packaged files
+*.7z
+*.dmg
+*.gz
+*.iso
+*.jar
+*.rar
+*.tar
+*.zip
+
+# Visual Studio Code files
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+.history/
+*.vsix