Update firmware/manifest.json to spec

Author: ajfriesen

docs/docs/firmware/manifest.json

@@ -1,4 +1,16 @@
 {
+  "name": "PokyPow",
   "version": "0.2.0",
-  "url": "https://github.com/ajfriesen/PokyPow/releases/download/0.2.0/pokypow-esp32c3.ota.bin"
-}
+  "funding_url": "https://github.com/sponsors/ajfriesen",
+  "builds": [
+    {
+      "chipFamily": "ESP32-C3",
+      "ota": {
+        "md5": "7e533f9755925aacb54d5721cb5a0741",
+        "path": "https://github.com/ajfriesen/PokyPow/releases/download/0.2.0/pokypow-esp32c3.ota.bin",
+        "release_url": "https://github.com/ajfriesen/PokyPow/releases/tag/0.2.0",
+        "summary": "Another update"
+      }
+    }
+  ]
+}