Implement new UI component for icons #230

- Introduce `AppIcon.vue`, offering improved performance over the
  previous `fort-awesome` dependency. This implementation reduces bundle
  size by 67.31KB (tested for web using `npm run build -- --mode prod`).
- Migrate Font Awesome 5 icons to Font Awesome 6.

This commit facilitates migration to Vue 3.0 (#230) and ensures no Vue
component remains tightly bound to a specific Vue version, enhancing
code portability.

Font Awesome license is not included because Font Awesome revokes its
right:

> "Attribution is no longer required as of Font Awesome 3.0"
>
> Sources:
>
> - https://fontawesome.com/v4/license/ (archived: https://web.archive.org/web/20231003213441/https://fontawesome.com/v4/license/, https://archive.ph/Yy9j5)
> - https://github.com/FortAwesome/Font-Awesome/wiki (archived: https://web.archive.org/web/20231003214646/https://github.com/FortAwesome/Font-Awesome/wiki, https://archive.ph/C6sXv)

This commit removes following third-party production dependencies:

- `@fortawesome/vue-fontawesome`
- `@fortawesome/free-solid-svg-icons`
- `@fortawesome/free-regular-svg-icons`
- `@fortawesome/free-brands-svg-icons`
- `@fortawesome/fontawesome-svg-core`

tests/integration/presentation/components/Scripts/View/Tree/Shared/Icon/UseSvgLoader.spec.ts

@@ -0,0 +1,20 @@
+import {
+  describe, it, expect,
+} from 'vitest';
+import { IconNames } from '@/presentation/components/Shared/Icon/IconName';
+import { useSvgLoader } from '@/presentation/components/Shared/Icon/UseSvgLoader';
+import { waitForValueChange } from '@tests/shared/WaitForValueChange';
+
+describe('useSvgLoader', () => {
+  describe('can load all SVGs', () => {
+    for (const iconName of IconNames) {
+      it(iconName, async () => {
+        // act
+        const { svgContent } = useSvgLoader(() => iconName);
+        await waitForValueChange(svgContent);
+        // assert
+        expect(svgContent.value).toBeTruthy();
+      });
+    }
+  });
+});