[K/N][tests] Added a bunch of tests on incremental compilation

native/native.tests/testData/caches/ic/simple/lib/lib.1.kt

@@ -0,0 +1 @@
+fun foo() = 41

native/native.tests/testData/caches/ic/simple/lib/lib.kt

@@ -0,0 +1 @@
+fun foo() = 42

native/native.tests/testData/caches/ic/simple/main/main.1.kt

@@ -0,0 +1,4 @@
+import kotlin.test.*
+
+@Test
+fun runTest() = assertEquals(41, foo())

native/native.tests/testData/caches/ic/simple/main/main.kt

@@ -0,0 +1,4 @@
+import kotlin.test.*
+
+@Test
+fun runTest() = assertEquals(42, foo())