Instantiation of annotations for JVM IR with the corresponding feature flag

Seperate checker for platforms that do not support this language feature yet

Synthetic implementations of annotations are generated on-demand with proper 
equals, hashCode, and annotationType methods

#KT-47699 Fixed

compiler/testData/codegen/box/annotations/instances/annotationInstancesEmptyDefault.kt

@@ -0,0 +1,38 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+// TARGET_BACKEND: JVM_IR
+
+// WITH_RUNTIME
+// !LANGUAGE: +InstantiationOfAnnotationClasses
+
+package test
+
+import kotlin.reflect.KClass
+
+enum class E { A, B }
+
+annotation class A()
+
+annotation class B(val a: A = A())
+
+annotation class C(
+    val i: Int = 42,
+    val b: B = B(),
+    val kClass: KClass<*> = B::class,
+    val e: E = E.B,
+    val aS: Array<String> = arrayOf("a", "b"),
+    val aI: IntArray = intArrayOf(1, 2)
+)
+
+annotation class Partial(
+    val i: Int = 42,
+    val s: String = "foo",
+    val e: E = E.A
+)
+
+fun box(): String {
+    val c = C()
+    assert(c.toString() == "@test.C(i=42, b=@test.B(a=@test.A()), kClass=interface test.B (Kotlin reflection is not available), e=B, aS=[a, b], aI=[1, 2])")
+    val p = Partial(e = E.B, s = "bar")
+    assert(p.toString() == "@test.Partial(i=42, s=bar, e=B)")
+    return "OK"
+}