feat: add server link sharing

packages/protocol/src/groups/server.ts

@@ -0,0 +1,16 @@
+import { Schema } from "effect"
+import { HttpApiEndpoint, HttpApiGroup, OpenApi } from "effect/unstable/httpapi"
+
+export const ServerGroup = HttpApiGroup.make("server.server")
+  .add(
+    HttpApiEndpoint.get("server.get", "/api/server", {
+      success: Schema.Struct({ urls: Schema.Array(Schema.String) }),
+    }).annotateMerge(
+      OpenApi.annotations({
+        identifier: "v2.server.get",
+        summary: "Get server information",
+        description: "Return the URLs that can be used to connect to this server.",
+      }),
+    ),
+  )
+  .annotateMerge(OpenApi.annotations({ title: "server" }))