Metadata support

[kamazheng]

Current attribute not support metadata.

[MetadataType(typeof(SettingMetaData))]
public partial class Setting
{ }

public class SettingMetaData
{
public int SettingPk { get; set; }

[Display(Name = "Key", ResourceType = typeof(Resources))]
[RenderMudTextField]
public string Key { get; set; } = null!;

}