feat(beatmap): implement get beatmap arrtibutes

app/models/beatmap.py

@@ -2,6 +2,8 @@ from __future__ import annotations
 
 from enum import IntEnum
 
+from pydantic import BaseModel
+
 
 class BeatmapRankStatus(IntEnum):
     GRAVEYARD = -2
@@ -45,3 +47,20 @@ class Language(IntEnum):
     RUSSIAN = 11
     POLISH = 12
     OTHER = 13
+
+
+class BeatmapAttributes(BaseModel):
+    star_rating: float
+    max_combo: int
+
+    # osu
+    aim_difficulty: float | None = None
+    aim_difficult_slider_count: float | None = None
+    speed_difficulty: float | None = None
+    speed_note_count: float | None = None
+    slider_factor: float | None = None
+    aim_difficult_strain_count: float | None = None
+    speed_difficult_strain_count: float | None = None
+
+    # taiko
+    mono_stamina_factor: float | None = None