Add hobbies page and update projects WIP UI

Introduced a new HobbiesComponent with routing and navigation updates. Removed unused ProjectDetailsComponent. Enhanced the projects page with a new 'work in progress' UI and improved .gitattributes for better file handling.

src/app/layout/topbar/topbar.component.html

@@ -12,7 +12,7 @@
   <nav class="nav">
     <a routerLink="/about" mat-button>{{ 'TOPBAR.ABOUT' | translate }}</a>
     <a routerLink="/projects" mat-button>{{ 'TOPBAR.PROJECTS' | translate }}</a>
-    <a routerLink="/projects" mat-button>{{ 'TOPBAR.HOBBY' | translate }}</a>
+    <a routerLink="/hobbies" mat-button>{{ 'TOPBAR.HOBBY' | translate }}</a>
     <a routerLink="/projects" mat-button>{{ 'TOPBAR.CONTACT' | translate }}</a>
   </nav>