restructure presentation layer

- Move most GUI related code to /presentation
- Move components to /components (separate from bootstrap and style)
- Move shared components helpers to /components/shared
- Rename Bootstrapping to bootstrapping to enforce same naming
  convention in /presentation

src/presentation/main.ts

@@ -0,0 +1,10 @@
+import Vue from 'vue';
+import App from './components/App.vue';
+import { ApplicationBootstrapper } from './bootstrapping/ApplicationBootstrapper';
+
+new ApplicationBootstrapper()
+    .bootstrap(Vue);
+
+new Vue({
+    render: (h) => h(App),
+}).$mount('#app');