Add kotlin runtime modulemap for swift export as part of kotlin-native dist #KT-65673 fixed

Co-authored-by: Alexander Shabalin <alexander.shabalin@ashabalin.me>

Merge-request: KT-MR-14493
Merged-by: Artem Olkov <artem.olkov@jetbrains.com>

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/cpp/CppUsage.kt

@@ -19,6 +19,12 @@ object CppUsage {
     @JvmField
     val COMPILATION_DATABASE = "llvm-compilation-database"
 
+    /**
+     * Directory with public headers of a component.
+     */
+    @JvmField
+    val API = Usage.C_PLUS_PLUS_API
+
     @JvmField
     val USAGE_ATTRIBUTE: Attribute<Usage> = Usage.USAGE_ATTRIBUTE
 }