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/unit/favoriteaccessory.go

@@ -0,0 +1,33 @@
+package unit
+
+import (
+	"fmt"
+	"honoka-chan/internal/middleware"
+	"honoka-chan/internal/router"
+	"honoka-chan/internal/session"
+
+	"github.com/gin-gonic/gin"
+)
+
+type SetResp struct {
+	ResponseData []any `json:"response_data"`
+	ReleaseInfo  []any `json:"release_info"`
+	StatusCode   int   `json:"status_code"`
+}
+
+func favoriteAccessory(ctx *gin.Context) {
+	ss := session.Get(ctx)
+	defer ss.Finalize()
+
+	fmt.Println(ctx.MustGet("request_data").(string))
+
+	ss.Respond(SetResp{
+		ResponseData: []any{},
+		ReleaseInfo:  []any{},
+		StatusCode:   200,
+	})
+}
+
+func init() {
+	router.AddHandler("main.php", "POST", "/unit/favoriteAccessory", middleware.Common, favoriteAccessory)
+}