Persist live status and migrate legacy live data

- Add user_live_status to store hi score, hi combo count, and clear count per chart
- Expand user_live_goal to persist achieved live_goal_reward_id entries instead of only coarse goal types
- Update live reward handling to refresh live status and sync newly achieved live goals on every clear
- Return live status and achieved goal ids from stored user data in /api/live/status
- Aggregate profile liveCnt from stored user_live_status instead of hardcoded values
- Load complete-rank thresholds from live info for goal evaluation
- Migrate legacy user_live_record data into user_live_status and backfill achievable live goals on startup

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/model/user/userlivestatus.go

@@ -0,0 +1,16 @@
+package usermodel
+
+type UserLiveStatus struct {
+	ID               int   `xorm:"id pk autoincr"`
+	UserID           int   `xorm:"user_id unique(user_live_status_pair) index"`
+	LiveDifficultyID int   `xorm:"live_difficulty_id unique(user_live_status_pair) index"`
+	HiScore          int   `xorm:"hi_score"`
+	HiComboCount     int   `xorm:"hi_combo_count"`
+	ClearCnt         int   `xorm:"clear_cnt"`
+	InsertDate       int64 `xorm:"insert_date"`
+	UpdateDate       int64 `xorm:"update_date"`
+}
+
+func (UserLiveStatus) TableName() string {
+	return "user_live_status"
+}