Cache bytecodes for JetCodeFragment in Evaluate Expression

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/simple.kt

@@ -0,0 +1,12 @@
+package simple
+
+fun main(args: Array<String>) {
+    //Breakpoint!
+    args.size
+}
+
+// EXPRESSION: 1
+// RESULT: 1: I
+
+// EXPRESSION: 1 + 1
+// RESULT: 2: I