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/tos/check.go

@@ -1,4 +1,4 @@
-package tos
+package tosschema
 
 type CheckData struct {
 	TosID           int   `json:"tos_id"`