Conditionally imports the samples only if its the root project (#292)

Author: jclyne

settings.gradle.kts

@@ -25,7 +25,9 @@ include(
     ":kotlin-sdk-test",
 )
 
-// Include sample projects as composite builds
-includeBuild("samples/kotlin-mcp-client")
-includeBuild("samples/kotlin-mcp-server")
-includeBuild("samples/weather-stdio-server")
+// Include sample projects as composite builds if this is the root project
+if (gradle.parent == null) {
+    includeBuild("samples/kotlin-mcp-client")
+    includeBuild("samples/kotlin-mcp-server")
+    includeBuild("samples/weather-stdio-server")
+}