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/inlineFunction.kt

@@ -1,3 +1,4 @@
+// FILE: inlineFunction.kt
 package inlineFunction
 
 import inlineFunctionOtherPackage.*
@@ -13,4 +14,14 @@ inline fun foo() = 1
 // RESULT: 1: I
 
 // EXPRESSION: foo()
-// RESULT: 1: I
+// RESULT: 1: I
+
+// FILE: lib.kt
+package inlineFunctionOtherPackage
+
+inline fun myFun(f: () -> Int): Int = f()
+
+val String.prop: String
+    get() {
+        return "a"
+    }