feat(revenuecat): add RevenueCat plugin to marketplace (#104)

Add RevenueCat as an external plugin submodule and register it in the
marketplace configuration. Enables managing in-app purchase backend
(projects, apps, products, entitlements, offerings) directly from Claude Code.

Author: amondnet

.claude-plugin/marketplace.json

@@ -435,6 +435,17 @@
         "sha": "f2f37954ecef9f1afce4fa81b6a612454a96c410"
       },
       "homepage": "https://posthog.com/docs/model-context-protocol"
+    },
+    {
+      "name": "revenuecat",
+      "description": "Configure RevenueCat projects, apps, products, entitlements, and offerings directly from Claude Code. Manage your in-app purchase backend without leaving your development workflow.",
+      "category": "development",
+      "source": {
+        "source": "url",
+        "url": "https://github.com/RevenueCat/rc-claude-code-plugin.git",
+        "sha": "af7cb77996aee4e7e3c109c5afec81f716139032"
+      },
+      "homepage": "https://www.revenuecat.com"
     }
   ]
 }

.gitmodules

@@ -37,3 +37,6 @@
 [submodule "external-plugins/google-workspace"]
 	path = external-plugins/google-workspace
 	url = https://github.com/googleworkspace/cli
+[submodule "external-plugins/revenuecat"]
+	path = external-plugins/revenuecat
+	url = https://github.com/RevenueCat/rc-claude-code-plugin.git