Refactor DI for simplicity and type safety

This commit improves the dependency injection mechanism by introducing a
custom `injectKey` function.

Key improvements are:

- Enforced type consistency during dependency registration and
  instantiation.
- Simplified injection process, abstracting away the complexity with a
  uniform API, regardless of the dependency's lifetime.
- Eliminated the possibility of `undefined` returns during dependency
  injection, promoting fail-fast behavior.
- Removed the necessity for type casting to `symbol` for injection keys
  in unit tests by using existing types.
- Consalidated imports, combining keys and injection functions in one
  `import` statement.

src/presentation/components/Scripts/Menu/TheOsChanger.vue

@@ -11,10 +11,8 @@
 </template>
 
 <script lang="ts">
-import {
-  defineComponent, computed, inject,
-} from 'vue';
-import { InjectionKeys } from '@/presentation/injectionSymbols';
+import { defineComponent, computed } from 'vue';
+import { injectKey } from '@/presentation/injectionSymbols';
 import { OperatingSystem } from '@/domain/OperatingSystem';
 import MenuOptionList from './MenuOptionList.vue';
 import MenuOptionListItem from './MenuOptionListItem.vue';
@@ -30,8 +28,8 @@ export default defineComponent({
     MenuOptionListItem,
   },
   setup() {
-    const { modifyCurrentContext, currentState } = inject(InjectionKeys.useCollectionState)();
-    const { application } = inject(InjectionKeys.useApplication);
+    const { modifyCurrentContext, currentState } = injectKey((keys) => keys.useCollectionState);
+    const { application } = injectKey((keys) => keys.useApplication);
 
     const allOses = computed<ReadonlyArray<IOsViewModel>>(() => (
       application.getSupportedOsList() ?? [])