Add a configuration for custom programs to keep track of

[Kavignon]

In a similar fashion as #2, a power user may have specific needs for what needs to be updated when cleaning and setting up their environment before executing specific programs.

The reason why there is a separation between custom and default programs is that there are more chances that every default program needs to be updated to the latest version whenever we can find an update, we might feel the same towards all the programs this tool tracks.

Here, we can give a space for users to not only provide a one-time update for specific programs but also a specific version if that can be found from the tool.