Implement achievement list

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/handler/api/achievement/achievement.go

@@ -0,0 +1,30 @@
+package achievement
+
+import (
+	honokautils "honoka-chan/internal/utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+var achievementFilterCategoryList = []int{
+	1, // 重要
+	3, // 挑战
+	4, // 每日
+	5, // 期间限定
+	6, // 8周年限定/全世界5000万人突破纪念
+	7, // 回忆画廊
+	8, // 9周年限定
+	9, // 连携课题
+}
+
+func AchievementApi(ctx *gin.Context, action string) (res any, err error) {
+	switch action {
+	case "unaccomplishList":
+		res, err = unaccomplishList()
+	case "initialAccomplishedList":
+		res, err = initialAccomplishedList(ctx)
+	default:
+		err = honokautils.NewUnimplementedActionError("achievement", action)
+	}
+	return res, err
+}