[Lombok] Add implementation of plugin for FIR

plugins/lombok/testData/diagnostics/setters.fir.kt

@@ -0,0 +1,42 @@
+// FILE: SetterTest.java
+
+import lombok.AccessLevel;
+import lombok.Setter;
+import lombok.Getter;
+
+public class SetterTest {
+    @Getter @Setter private int age = 10;
+
+    @Setter(AccessLevel.PROTECTED) private String name;
+
+    @Setter private boolean primitiveBoolean;
+
+    void test() {
+        setAge(12);
+        setPrimitiveBoolean(true);
+    }
+}
+
+
+// FILE: test.kt
+
+fun test() {
+    val obj = SetterTest()
+    obj.setAge(42)
+    obj.age = 42
+
+    //synthetic property generated only when there is a getter
+    obj.<!INVISIBLE_REFERENCE!>primitiveBoolean<!> = false
+    obj.setPrimitiveBoolean(true)
+
+    //shouldn't be accesible from here
+    obj.<!INVISIBLE_REFERENCE!>setName<!>("abc")
+
+    OverridenGetterTest().usage()
+}
+
+class OverridenGetterTest : SetterTest() {
+    fun usage() {
+        setName("abc")
+    }
+}