Add XML comments to public entities.

Aaru.Filesystems/FAT/File.cs

@@ -42,6 +42,7 @@ namespace Aaru.Filesystems
 {
     public sealed partial class FAT
     {
+        /// <inheritdoc />
         public Errno MapBlock(string path, long fileBlock, out long deviceBlock)
         {
             deviceBlock = 0;
@@ -68,6 +69,7 @@ namespace Aaru.Filesystems
             return Errno.NoError;
         }
 
+        /// <inheritdoc />
         public Errno GetAttributes(string path, out FileAttributes attributes)
         {
             attributes = new FileAttributes();
@@ -85,6 +87,7 @@ namespace Aaru.Filesystems
             return Errno.NoError;
         }
 
+        /// <inheritdoc />
         public Errno Read(string path, long offset, long size, ref byte[] buf)
         {
             if(!_mounted)
@@ -145,6 +148,7 @@ namespace Aaru.Filesystems
             return Errno.NoError;
         }
 
+        /// <inheritdoc />
         public Errno Stat(string path, out FileEntryInfo stat)
         {
             stat = null;