Refactor debugger tests

1. Move tests to their own module
2. Avoid sharing the 'tinyApp' project between tests
3. Clean up option directive handling

idea/jvm-debugger/jvm-debugger-test/testData/stepping/stepIntoAndSmartStepInto/javaSamFunction.kt

@@ -1,3 +1,4 @@
+// FILE: javaSamFunction.kt
 package javaSamFunction
 
 import forTests.MyJavaClass
@@ -6,4 +7,15 @@ fun main(args: Array<String>) {
     val klass = MyJavaClass()
     //Breakpoint!
     klass.other { /* do nothing*/ }
+}
+
+// FILE: forTests/MyJavaClass.java
+package forTests;
+
+public class MyJavaClass {
+    public void other(Runnable runnable) {
+        runnable.run();
+    }
+
+    public MyJavaClass() {}
 }