Implement more endpoints & overhaul [2/n]

Drop LevelDB and move all the things to SQLite.

Implemented endpoints:
/api <unit, accessoryMaterialAll>
/api <unit, accessoryTab>
/live/continue
/live/partyList
/unit/favoriteAccessory (WIP)
/unit/sale

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

internal/model/user/userdeckunit.go

@@ -1,4 +1,4 @@
-package user
+package usermodel
 
 type UserDeckUnit struct {
 	ID               int   `xorm:"id pk autoincr"`
@@ -11,12 +11,13 @@ type UserDeckUnit struct {
 	DisplayRank      int   `xorm:"display_rank"`
 	Love             int   `xorm:"love"`
 	UnitSkillLevel   int   `xorm:"unit_skill_level"`
-	IsRankMax        int   `xorm:"is_rank_max"`
-	IsLoveMax        int   `xorm:"is_love_max"`
-	IsLevelMax       int   `xorm:"is_level_max"`
-	IsSigned         int   `xorm:"is_signed"`
+	IsRankMax        bool  `xorm:"is_rank_max"`
+	IsLoveMax        bool  `xorm:"is_love_max"`
+	IsLevelMax       bool  `xorm:"is_level_max"`
+	IsSigned         bool  `xorm:"is_signed"`
 	BeforeLove       int   `xorm:"before_love"`
 	MaxLove          int   `xorm:"max_love"`
+	UserID           int   `xorm:"user_id"`
 	InsertDate       int64 `xorm:"insert_date"`
 }