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/ghome/devicekey.go

@@ -0,0 +1,7 @@
+package ghomemodel
+
+type DeviceKey struct {
+	ID       int    `xorm:"id pk autoincr"`
+	DeviceID string `xorm:"device_id"`
+	RandKey  string `xorm:"rand_key"`
+}