env: create devcontainer.json

.devcontainer/devcontainer.json

@@ -0,0 +1,22 @@
+{
+  "image": "mcr.microsoft.com/devcontainers/python:0-3.10-bullseye",
+  "features": {
+    "ghcr.io/devcontainers/features/python:1": {
+      "version": "3.10"
+    }
+  }
+  // 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.txt",
+
+  // Configure tool-specific properties.
+  // "customizations": {},
+
+  // Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+  // "remoteUser": "root"
+}