feat(pp-calculator): support other pp calculators (#57)

New configurations:

- CALCULATOR="rosu": specific pp calculator
- CALCULATOR_CONFIG='{}': argument passed through into calculator

app/models/performance.py

@@ -0,0 +1,81 @@
+from app.models.score import GameMode
+
+from pydantic import BaseModel
+
+
+class PerformanceAttributes(BaseModel):
+    pp: float
+
+
+# https://github.com/ppy/osu/blob/9ebc5b0a35452e50bd408af1db62cfc22a57b1f4/osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceAttributes.cs
+class OsuPerformanceAttributes(PerformanceAttributes):
+    aim: float
+    speed: float
+    accuracy: float
+    flashlight: float
+    effective_miss_count: float
+    speed_deviation: float | None = None
+
+    # 2025 Q3 update
+    # combo_based_estimated_miss_count: int
+    # score_based_estimated_miss_count: int | None = None
+    # aim_estimated_slider_breaks: int
+    # speed_estimated_slider_breaks: int
+
+
+# https://github.com/ppy/osu/blob/9ebc5b0a35452e50bd408af1db62cfc22a57b1f4/osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceAttributes.cs
+class TaikoPerformanceAttributes(PerformanceAttributes):
+    difficulty: float
+    accuracy: float
+    estimated_unstable_rate: float | None = None
+
+
+# https://github.com/ppy/osu/blob/9ebc5b0a35452e50bd408af1db62cfc22a57b1f4/osu.Game.Rulesets.Mania/Difficulty/ManiaPerformanceAttributes.cs
+class ManiaPerformanceAttributes(PerformanceAttributes):
+    difficulty: float
+
+
+PERFORMANCE_CLASS: dict[GameMode, type[PerformanceAttributes]] = {
+    GameMode.OSU: OsuPerformanceAttributes,
+    GameMode.MANIA: ManiaPerformanceAttributes,
+    GameMode.TAIKO: TaikoPerformanceAttributes,
+}
+
+
+class BeatmapAttributes(BaseModel):
+    star_rating: float
+    max_combo: int
+
+
+# https://github.com/ppy/osu/blob/9ebc5b0a35452e50bd408af1db62cfc22a57b1f4/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyAttributes.cs
+class OsuBeatmapAttributes(BeatmapAttributes):
+    aim_difficulty: float
+    aim_difficult_slider_count: float
+    speed_difficulty: float
+    speed_note_count: float
+    flashlight_difficulty: float | None = None
+    slider_factor: float
+    aim_difficult_strain_count: float
+    speed_difficult_strain_count: float
+
+    # 2025 Q3 update
+    # aim_top_weighted_slider_factor: float
+    # speed_top_weighted_slider_factor: float
+    # nested_score_per_object: float
+    # legacy_score_base_multiplier: float
+    # maximum_legacy_combo_score: float
+
+
+# https://github.com/ppy/osu/blob/9ebc5b0a35452e50bd408af1db62cfc22a57b1f4/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyAttributes.cs
+class TaikoBeatmapAttributes(BeatmapAttributes):
+    rhythm_difficulty: float
+    mono_stamina_factor: float
+
+    # 2025 Q3 update
+    # consistency_factor: float
+
+
+DIFFICULTY_CLASS: dict[GameMode, type[BeatmapAttributes]] = {
+    GameMode.OSU: OsuBeatmapAttributes,
+    GameMode.TAIKO: TaikoBeatmapAttributes,
+}