[Test] KT-61360: add tests for the IrFakeOverrideBuilder

Add tests for fake overrides with focus on java interoperability

Co-authored-by: Aleksandra Arsenteva <aleksandra.arsenteva@jetbrains.com>

compiler/testData/ir/irText/fakeOverrides/methodmodifiers/basicKotlinModifiersOverride.kt.txt

@@ -0,0 +1,54 @@
+open class A {
+  constructor() /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  inline fun foo() {
+  }
+
+  open external fun foo2()
+
+  open suspend fun foo3() {
+  }
+
+  inline fun <reified T : Any?> foo4(t: T) {
+  }
+
+}
+
+class B : Java1 {
+  constructor() /* primary */ {
+    super/*Java1*/()
+    /* <init>() */
+
+  }
+
+}
+
+class C : Java1 {
+  constructor() /* primary */ {
+    super/*Java1*/()
+    /* <init>() */
+
+  }
+
+  override fun foo2() {
+  }
+
+  override suspend fun foo3() {
+  }
+
+}
+
+suspend fun test(b: B, c: C) {
+  b.foo()
+  b.foo2()
+  b.foo3()
+  b.foo4<Int>(t = 1)
+  c.foo()
+  c.foo2()
+  c.foo3()
+  c.foo4<String>(t = "")
+}