Add devcontainer config

.devcontainer/Python 3.11/devcontainer.json

@@ -0,0 +1,33 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/python
+{
+	"name": "Python 3.11",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/python:1-3.11-bookworm",
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	"postCreateCommand": "pip3 install --user -r requirements-dev.txt",
+
+	// Configure tool-specific properties.
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"mikestead.dotenv",
+				"EditorConfig.EditorConfig",
+				"GitHub.vscode-pull-request-github",
+				"hbenl.vscode-test-explorer",
+				"redhat.vscode-xml",
+				"ninoseki.vscode-pylens"
+			]
+		}
+	}
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.gitignore

@@ -66,7 +66,8 @@ Thumbs.db
 
 .idea/
 .DS_Store
-.vscode/
+.vscode/*
+!.vscode/extensions.json
 pyinstrument/
 
 # Now managed by templates

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "ms-vscode-remote.remote-containers"
+    ]
+}

requirements-dev.txt

@@ -15,3 +15,12 @@ coverage >= 5.2
 flake8 >= 3.8
 flake8-import-order >= 0.18
 websocket-client >= 0.57.0
+
+types-requests >= 2.31
+types-PyYAML >= 6.0.12
+types-six >= 1.13
+types-python-dateutil >= 2.8.1
+types-setuptools >= 44.1.1
+
+types-Pygments
+types-colorama