Add basic VSCode plumbing.

.devcontainer.json

@@ -0,0 +1,8 @@
+{
+    "dockerFile": "images/default/Dockerfile",
+    "mounts": ["source=/var/run/docker.sock,target=/var/run/docker.sock,type=bind"],
+    "overrideCommand": true,
+    "extensions": [
+        "bazelbuild.vscode-bazel"
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,31 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Build",
+            "type": "shell",
+            "command": "bazel build //...",
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "presentation": {
+              "reveal": "always",
+              "panel": "new"
+            }
+        },
+        {
+            "label": "Test",
+            "type": "shell",
+            "command": "bazel test //...",
+            "group": {
+                "kind": "test",
+                "isDefault": true
+            },
+            "presentation": {
+            "reveal": "always",
+            "panel": "new"
+        }
+      }
+    ]
+}