build: add devcontainer configuration

PR-URL: https://github.com/nodejs/node/pull/40825
Reviewed-By: James M Snell <jasnell@gmail.com>

.devcontainer/.devcontainer.json

@@ -0,0 +1,19 @@
+{
+  "name": "Node.js Core Developer Environment",
+  "extensions": [
+      "github.vscode-pull-request-github",
+      "ms-vsliveshare.vsliveshare",
+      "vscode-icons-team.vscode-icons",
+      "visualstudioexptteam.vscodeintellicode"
+  ],
+  "dockerFile": "Dockerfile",
+  "initializeCommand": "docker system prune -f -a",
+  "settings": {
+    "terminal.integrated.profiles.linux": {
+      "zsh (login)": {
+        "path": "zsh",
+        "args": ["-l"]
+      }
+    }
+  }
+}

.devcontainer/Dockerfile

@@ -0,0 +1 @@
+FROM nodejs/devcontainer:nightly

.gitignore

@@ -7,6 +7,8 @@
 .*
 # Exclude specific dotfiles that we want to track.
 !deps/**/.*
+!.devcontainer/
+!.devcontainer/.devcontainer.json
 !test/fixtures/**/.*
 !.clang-format
 !.cpplint