Feature request: Ability to add secondary source

[hex007]

There are some roms that are patched or modified and if possible I would like to manually add details that are pulled by the scrapper and added to specific gamelist. eg

I can have a file my_extras.gamelist with content below and when scrapper comes across this rom it will definitely not find any info online so it should use this info by matching the hashes.

<gamelist>
<game>
		<hash>HASH_VALUE</hash>
		<path>./test_patched_rom.gb</path>
		<name>Oh my special patched Rom</name>
		<desc>This is the patched version of Not so special game with added translations.</desc>
		<image>this_image_plz.jpg</image>
		<genre>Fighting</genre>
		<players>2</players>
	</game>
</gamelist>

[sselph]

If the information is already in your gamelist.xml the using -append would use the information already provided, but there is no option to provide a source.