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/evaluation/singleBreakpoint/classFromAnotherPackage.kt

@@ -1,3 +1,4 @@
+// FILE: classFromAnotherPackage.kt
 package classFromAnotherPackage
 
 import forTests.MyJavaClass
@@ -12,3 +13,7 @@ fun main(args: Array<String>) {
 
 // EXPRESSION: forTests.MyJavaClass()
 // RESULT: instance of forTests.MyJavaClass(id=ID): LforTests/MyJavaClass;
+
+// FILE: forTests/MyJavaClass.java
+package forTests;
+public class MyJavaClass {}