Create EmbedBuilderExtensions.cs

src/Discord.Net.Rest/Extensions/EmbedBuilderExtensions.cs

@@ -0,0 +1,25 @@
++using System;
++
++namespace Discord
++{
++    public static class EmbedBuilderExtensions
++    {
++        public static EmbedBuilder WithUrl(this EmbedBuilder builder, string url)
++        => Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out var uri) ? builder.WithUrl(uri) : builder;
++
++        public static EmbedBuilder WithImageUrl(this EmbedBuilder builder, string url)
++        => Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out var uri) ? builder.WithImageUrl(uri) : builder;
++
++        public static EmbedBuilder WithThumbnailUrl(this EmbedBuilder builder, string url)
++        => Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out var uri) ? builder.WithThumbnailUrl(uri) : builder;
++
++        public static EmbedAuthorBuilder WithUrl(this EmbedAuthorBuilder builder, string url)
++        => Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out var uri) ? builder.WithUrl(uri) : builder;
++
++        public static EmbedAuthorBuilder WithIconUrl(this EmbedAuthorBuilder builder, string url)
++        => Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out var uri) ? builder.WithIconUrl(uri) : builder;
++
++        public static EmbedFooterBuilder WithIconUrl(this EmbedFooterBuilder builder, string url)
++        => Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out var uri) ? builder.WithIconUrl(uri) : builder;
++    }
++}