move debugger to debugger folder

src/app.js

@@ -24,7 +24,7 @@ var Editor = require('./app/editor')
 var Renderer = require('./app/ui/renderer')
 var Compiler = require('./app/compiler/compiler')
 var ExecutionContext = require('./app/execution-context')
-var Debugger = require('./app/debugger')
+var Debugger = require('./app/debugger/debugger')
 var StaticAnalysis = require('./app/staticanalysis/staticAnalysisView')
 var FilePanel = require('./app/panels/file-panel')
 var EditorPanel = require('./app/panels/editor-panel')