[DATFromDir] Add copy files flag

This flag forces files to be copied to the temporary directory before being parsed. This can decrease the parsing time if the temp directory is on an SSD.

SabreTools.Helper/README.1ST

@@ -231,6 +231,10 @@ Options:
 			If this flag is set, then the Date will be appended to each file information
 			in the output DAT. The output format is standardized as "yyyy/MM/dd HH:mm:ss".
 			
+		-cf, --copy-files	Copy files to the temp directory before parsing
+			If this flag is set, then all files that are going to be parsed are moved to the temporary directory before being hashed. This can be helpful in cases where the
+			temp folder is located on an SSD and the user wants to take advantage of this.
+			
 		-t=, --temp=		Set the name of the temporary directory
 			Optionally, a temp folder can be supplied in the case the default temp directory
 			(inside the running folder) is not preferred. This is used for any operations