[K/N] Add build-tools as a module for IDEA

Adds a module to project making it able to use analysis
and syntax highlight

(cherry picked from commit c545fd5ef8)

settings.gradle

@@ -783,4 +783,5 @@ if (buildProperties.isKotlinNativeEnabled) {
     include ':kotlin-native:backend.native:tests'
     include ":kotlin-native-compiler-embeddable"
     project(":kotlin-native-compiler-embeddable").projectDir = "$rootDir/kotlin-native/prepare/kotlin-native-embeddable-compiler" as File
+    include ':kotlin-native:build-tools'
 }