Add a `--skip-db` option to `gitea dump`

[JulienPalard]

Feature Description

As the docs says:

Gitea admins may prefer to use the native the MySQL and PostgreSQL dump tools instead.

So it would be nice to have a --skip-db in gitea dump to avoid dumping the database twice per backup, saving a bit of time.

Screenshots

No response

[maltegrosse]

Flags to skip or include certain objects would be great. As all my container are built automatically, I dont want to backup them. As container sizes can be quite heavy, a --skip-packages would be a nice feature.

EDIT: nevermind, found it int he go file, https://github.com/go-gitea/gitea/blob/main/cmd/dump.go#L83