feat(highscore): create basic structure for highscore

src/highscore.py

@@ -0,0 +1,17 @@
+import json
+
+class Highscore:
+    def __init__(self):
+        self.path = "./highscore.json"
+
+    def load_scores(self):
+        pass
+
+    def save_scores(self, scores):
+        pass
+
+    def add_score(self, player_name, score_ects, time_survived, won):
+        pass
+
+    def get_top_scores(self, number_of_top_scores):
+        pass