Common klib support in the Kotlin Gradle plugin (KT-32677)

Refactor the Kotlin/Native compilations and tasks to support
Kotlin/Native-shared source sets compilation within the metadata target.

Provide the feature flag kotlin.mpp.enableCommonKlibs that enables
the following behavior:
* compilation of Kotlin/Native-shared source sets to a klib using
the Kotlin/Native compiler.
* compilation of common source sets (not just Kotlin/Native) into a
klib rather than *.kotlin_metadata

Issue #KT-32677 Fixed

.idea/dictionaries/sergey_igushkin.xml

@@ -0,0 +1,7 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="sergey.igushkin">
+    <words>
+      <w>klib</w>
+    </words>
+  </dictionary>
+</component>