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/schema/announce/checkstate.go

@@ -1,4 +1,4 @@
-package announce
+package announceschema
 
 type CheckStateData struct {
 	HasUnreadAnnounce bool  `json:"has_unread_announce"`