Append [nsw] (or custom) to all titles

[DblK]

If tinshop is used with other shops the list of New Games can be flooded by other.
To be able to filter entries from our shop we should be able to append text in the name of each entries, that way, filtering within tinfoil will be easy without having to disable other shop.

The feature should allow us to:

• Decide to append or not a string after each entry name
• Decide to append the string and default to [tinshop]

Those information should be added to the config file. This should be similar to welcomeMessage and noWelcomeMessage even if it's not at the same place in code.

The modification should alter the mergedLibrary.

[Helvio88]

Would you add some info like the other issue on what are some key files? I might try to take on this, too!

[DblK]

Here are some additional infos:

• config/config.go to handle the file configuration (look for welcomeMessage or WelcomeMessage for some example)
• repository/interfaces.go to add Helper on Config interface with the additional getter. (Since interface will be modified, as stated in the readme you should launch a bash script.
• gamescollection/collection.go function OnConfigUpdate to alter mergedLibrary by modifying entry.Name.

Tell me if you have additional questions after digging in the code ^^