Add support for writing KMP benchmarks on iOS.

Test: ./gradlew --stop && ANDROIDX_PROJECTS=KMP ./gradlew studio
Change-Id: I95b3408f993ee3082dfa29f666d85aaf9d0ac529
diff --git a/settings.gradle b/settings.gradle
index 8c59bad..eea363e 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -381,6 +381,7 @@
 includeProject(":autofill:autofill", [BuildType.MAIN])
 includeProject(":benchmark:benchmark-benchmark", "benchmark/benchmark", [BuildType.MAIN, BuildType.COMPOSE])
 includeProject(":benchmark:benchmark-common")
+includeProject(":benchmark:benchmark-darwin", [BuildType.KMP])
 includeProject(":benchmark:benchmark-darwin-core", [BuildType.KMP])
 includeProject(":benchmark:benchmark-gradle-plugin", "benchmark/gradle-plugin", [BuildType.MAIN])
 includeProject(":benchmark:benchmark-junit4")