Add "Author" field to plugins.

DiscImageChef.CommonTypes/Interfaces/IFilesystem.cs

@@ -57,6 +57,8 @@ namespace DiscImageChef.CommonTypes.Interfaces
         /// </summary>
         /// <value>Information about the filesystem as expected by CICM Metadata XML</value>
         FileSystemType XmlFsType { get; }
+        /// <summary>Plugin author</summary>
+        string Author { get; }
 
         /// <summary>
         ///     Identifies the filesystem in the specified LBA

DiscImageChef.CommonTypes/Interfaces/IFilter.cs

@@ -47,6 +47,8 @@ namespace DiscImageChef.CommonTypes.Interfaces
         string Name { get; }
         /// <summary>Unique UUID of the plugin</summary>
         Guid Id { get; }
+        /// <summary>Plugin author</summary>
+        string Author { get; }
 
         /// <summary>
         ///     Closes all opened streams.

DiscImageChef.CommonTypes/Interfaces/IMediaImage.cs

@@ -55,6 +55,8 @@ namespace DiscImageChef.CommonTypes.Interfaces
         string Name { get; }
         /// <summary>Plugin UUID.</summary>
         Guid Id { get; }
+        /// <summary>Plugin author</summary>
+        string Author { get; }
         /// <summary>
         ///     Gets the image format.
         /// </summary>

DiscImageChef.CommonTypes/Interfaces/IPartition.cs

@@ -53,6 +53,8 @@ namespace DiscImageChef.Partitions
         string Name { get; }
         /// <summary>Plugin UUID.</summary>
         Guid Id { get; }
+        /// <summary>Plugin author</summary>
+        string Author { get; }
 
         /// <summary>
         ///     Interprets a partitioning scheme.