[klib] Add an option to write out header klibs

The header klib is supposed to only contain the public abi of the module
similar to jvm-abi-gen. It is intended to be used as a dependency for other
klib compilations instead of the full klib for compilation avoidance.

^KT-60807

native/native.tests/testData/klib/header-klibs/comparison/privateInterface/base/test.kt

@@ -0,0 +1,10 @@
+package test
+
+private interface A {
+    fun foo() = 0
+    fun bar(): String
+}
+
+class B: A {
+    override fun bar() = "test${foo()}"
+}

native/native.tests/testData/klib/header-klibs/comparison/privateInterface/sameAbi/test.kt

@@ -0,0 +1,10 @@
+package test
+
+private interface A {
+    fun foo() = 42
+    fun bar(): String
+}
+
+class B: A {
+    override fun bar() = "test${foo()}"
+}