Add healthcheck widget

src/widgets/healthchecks/widget.js

@@ -0,0 +1,18 @@
+import credentialedProxyHandler from "utils/proxy/handlers/credentialed";
+
+const widget = {
+  api: "https://healthchecks.io/api/v2/{endpoint}/{uuid}",
+  proxyHandler: credentialedProxyHandler,
+
+  mappings: {
+    checks: {
+      endpoint: "checks",
+      validate: [
+        "status",
+        "last_ping",
+      ]
+    },
+  },
+};
+
+export default widget;