Support Media Message (#9)

internal/wechatdb/repository/media.go

@@ -0,0 +1,11 @@
+package repository
+
+import (
+	"context"
+
+	"github.com/sjzar/chatlog/internal/model"
+)
+
+func (r *Repository) GetMedia(ctx context.Context, _type string, key string) (*model.Media, error) {
+	return r.ds.GetMedia(ctx, _type, key)
+}