Phase 2: swap proxyAuth -> oidc addon in manifest

CloudronManifest.json

@@ -9,7 +9,10 @@
   "httpPort": 8000,
   "addons": {
     "localstorage": {},
-    "proxyAuth": {}
+    "oidc": {
+      "loginRedirectUri": "/auth/openid/callback",
+      "logoutRedirectUri": "/"
+    }
   },
   "manifestVersion": 2,
   "website": "https://inference.coop",