Fix debugger tests.

- Index binaries by facade class fqName
- Fix DebuggerUtils: should understand new facades
- Refactor IDELightClassGenerationSupport
- Add facadeSimpleName to KotlinFileStub

idea/testData/filters/exceptionFilter/kotlinClass/a.kt

@@ -0,0 +1,5 @@
+class A {
+    fun foo() {
+        println("Hello!")
+    }
+}