add extensions in devcontainer.json

.devcontainer/devcontainer.json

@@ -16,6 +16,16 @@
 	"customizations": {
 		"jetbrains": {
 			"backend": "PyCharm"
+		},
+		"vscode": {
+			"extensions": [
+				"tamasfe.even-better-toml",
+				"njpwerner.autodocstring",
+				"ms-python.python",
+				"KevinRose.vsc-python-indent",
+				"ms-python.vscode-pylance",
+				"ms-python.autopep8"
+			]
 		}
 	}
 }