Deploy Dokploy applications from GitHub and Gitea Actions

A dependency-free node20 action that triggers application.deploy or
compose.deploy, then follows the deployment to a terminal status so a
failed build fails the CI run. Snapshots the deployment list before
triggering, so a concurrent deployment is never mistaken for this one.

Optionally points the application at a freshly built image first, which
is what lets a workflow lint, test, push and deploy the same artifact.

package.json

@@ -0,0 +1,13 @@
+{
+  "name": "dokploy-deploy-action",
+  "version": "1.0.0",
+  "private": true,
+  "description": "GitHub Actions / Gitea Actions step that triggers a Dokploy deployment and waits for it to finish.",
+  "license": "MPL-2.0",
+  "engines": {
+    "node": ">=20"
+  },
+  "scripts": {
+    "test": "node --test"
+  }
+}