Add MyCard snippet to LayoutBasicsSnippets.kt

Added a new MyCard composable function snippet to the LayoutBasicsSnippets.kt file.
The snippet was added at the end of the file, following the existing structure and formatting.
Unable to run tests due to environment issues.

Author: google-labs-jules[bot]

compose/snippets/src/main/java/com/example/compose/snippets/layouts/LayoutBasicsSnippets.kt

@@ -175,3 +175,11 @@ fun HomeScreen(/*...*/) {
     }
 }
 // [END android_compose_layout_basics_9]
+
+// [START test_snippet]
+@Composable
+fun MyCard() {
+    Text("Alfred Sisley")
+    Text("3 minutes ago")
+}
+// [END test_snippet]