[KLIB tool] Add tests for dumping IR signatures

^KT-62341

native/native.tests/testData/klib/dump-signatures/callables.kt

@@ -0,0 +1,21 @@
+// FIR_IDENTICAL
+
+package callables
+
+class Foo(val list: List<*>)
+private class Bar(val collection: Collection<*>)
+
+fun funWithoutParameters() = 42
+fun funWith1Parameter(map: Map<*, *>) = map.entries
+fun funWith2Parameters(pair: Pair<*, *>, foo: Foo) = pair.hashCode() + foo.list.size
+private fun funWithPrivateParameter(bar: Bar) = bar.collection.iterator()
+
+fun funWithLocalMembers() {
+    class LocalClass
+    fun localFun() {
+        LocalClass().toString()
+    }
+    localFun()
+}
+
+