feat(site): allow recreating devcontainers and showing dirty status (#18049)

This change allows showing the devcontainer dirty status in the UI as
well as a recreate button to update the devcontainer.

Closes #16424

docs/reference/api/agents.md

@@ -777,6 +777,7 @@ curl -X GET http://coder-server:8080/api/v2/workspaceagents/{workspaceagent}/con
     {
       "created_at": "2019-08-24T14:15:22Z",
       "devcontainer_dirty": true,
+      "devcontainer_status": "running",
       "id": "string",
       "image": "string",
       "labels": {