Add ESLint integration and Angular linting support

Configured ESLint for the project with Angular and TypeScript support. Added angular-eslint dependencies, updated angular.json to include linting, and created eslint.config.js for lint rules. Updated package.json and package-lock.json with new dev dependencies.

src/assets/i18n/de.json

@@ -301,10 +301,13 @@
     "CLEAR_NODE": "Löschen",
     "DIJKSTRA": "Dijkstra",
     "ASTAR": "A*",
+    "RESET_BOARD": "Board zurücksetzten",
     "CLEAR_BOARD": "Board leeren",
     "CLEAR_PATH": "Pfad löschen",
     "VISITED": "Besucht",
     "PATH": "Pfad",
+    "PATH_LENGTH": "Pfadlänge",
+    "EXECUTION_TIME": "Ausführungszeit",
     "ALERT": {
       "START_END_NODES": "Bitte wählen Sie einen Start- und Endknoten aus, bevor Sie den Algorithmus starten."
     }