Increase testability through dependency injection

- Remove existing integration tests for hooks as they're redundant after
  this change.
- Document the pattern in relevant documentation.
- Introduce `useEnvironment` to increase testability.
- Update components to inject dependencies rather than importing hooks
  directly.

src/presentation/main.ts

@@ -3,8 +3,6 @@ import { buildContext } from '@/application/Context/ApplicationContextFactory';
 import App from './components/App.vue';
 import { ApplicationBootstrapper } from './bootstrapping/ApplicationBootstrapper';
 
-let vue: Vue;
-
 buildContext().then(() => {
   // hack workaround to solve running tests through
   // Vue CLI throws 'Top-level-await is only supported in EcmaScript Modules'
@@ -12,9 +10,7 @@ buildContext().then(() => {
   new ApplicationBootstrapper()
     .bootstrap(Vue);
 
-  vue = new Vue({
+  new Vue({
     render: (h) => h(App),
   }).$mount('#app');
 });
-
-export const getVue = () => vue; // exporting is hack until Vue 3 so vue-js-modal can be used