chore: add .vscode workspace settings and suggested extensions (#200)

.gitignore

@@ -121,7 +121,9 @@ celerybeat.pid
 .dmypy.json
 
 # VSCode
-.vscode
+.vscode/*
+!.vscode/settings.json
+!.vscode/extensions.json
 
 # Autogenerated docs files
 docs/docs/reference

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+  "recommendations": [
+    "ms-python.debugpy",
+    "ms-python.python",
+    "charliermarsh.ruff"
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,10 @@
+{
+  "[python]": {
+    "editor.formatOnSave": true,
+    "editor.defaultFormatter": "charliermarsh.ruff",
+    "editor.codeActionsOnSave": {
+      "source.fixAll": "explicit",
+      "source.organizeImports": "explicit"
+    }
+  }
+}