Add algorithms section with pathfinding visualizer

Introduces a new 'Algorithms' section, replacing the previous 'Hobbies' page. Adds components, services, and models for algorithm categories and a pathfinding visualizer supporting Dijkstra and A* algorithms. Updates navigation and i18n files to reflect the new section and removes all hobbies-related files.

src/assets/i18n/de.json

@@ -7,7 +7,7 @@
     "ABOUT": "Über mich",
     "IMPRINT": "Impressum",
     "PROJECTS": "Projekte",
-    "HOBBY": "Hobbies",
+    "ALGORITHMS": "Algorithmen",
     "SETTINGS": "Einstellungen",
     "LANGUAGE": "Sprache",
     "APPEARANCE": "Darstellung"
@@ -292,5 +292,21 @@
     "PARAGRAPH": "Angaben gemäß § 5 DDG",
     "COUNTRY": "Deutschland",
     "CONTACT": "Kontakt"
+  },
+  "PATHFINDING": {
+    "TITLE": "Pfadfindungsalgorithmen",
+    "START_NODE": "Startknoten",
+    "END_NODE": "Endknoten",
+    "WALL": "Wand",
+    "CLEAR_NODE": "Löschen",
+    "DIJKSTRA": "Dijkstra",
+    "ASTAR": "A*",
+    "CLEAR_BOARD": "Board leeren",
+    "CLEAR_PATH": "Pfad löschen",
+    "VISITED": "Besucht",
+    "PATH": "Pfad",
+    "ALERT": {
+      "START_END_NODES": "Bitte wählen Sie einen Start- und Endknoten aus, bevor Sie den Algorithmus starten."
+    }
   }
 }