Point SDK GraphQL to api-app and switch map markers query to getMarkers.

This aligns the app with the new backend endpoint/schema and keeps map marker mapping compatible with the new response shape.

Made-with: Cursor

sdk/build.gradle.kts

@@ -39,6 +39,10 @@ apollo {
     service("service") {
         packageName.set("org.db3.airmq.sdk")
         schemaFiles.from(file("../app/src/main/graphql/schema.graphqls"))
+        introspection {
+            endpointUrl.set("https://api-app.airmq.cc/graphql")
+            schemaFile.set(file("../app/src/main/graphql/schema.graphqls"))
+        }
     }
 }
 
@@ -56,4 +60,6 @@ dependencies {
     // Hilt
     implementation(libs.hilt.android)
     ksp(libs.hilt.compiler)
+
+    testImplementation(libs.junit)
 }