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/handler/api/unit/unit.go

@@ -10,6 +10,10 @@ func UnitApi(ctx *gin.Context, action string) (res any, err error) {
 	switch action {
 	case "accessoryAll":
 		res, err = unitAccessoryAll(ctx)
+	case "accessoryMaterialAll":
+		res, err = unitAccessoryMaterialAll()
+	case "accessoryTab":
+		res, err = unitAccessoryTab()
 	case "deckInfo":
 		res, err = unitDeckInfo(ctx)
 	case "removableSkillInfo":