feat: add meta model and test

internal/model/meta.go

@@ -0,0 +1,11 @@
+package model
+
+type Meta struct {
+	ID        uint   `json:"id" gorm:"primaryKey"`
+	Path      string `json:"path" gorm:"unique" binding:"required"`
+	Password  string `json:"password"`
+	Hide      string `json:"hide"`
+	Upload    bool   `json:"upload"`
+	OnlyShows string `json:"only_shows"`
+	Readme    string `json:"readme"`
+}