[FEATURE] Add the feature to display only the predecessors of a player in VitaLineage

[PranshulDobriyal]

Describe the solution you'd like Add a feature in VitaLineage that allows the user to display only the predecessors of the player.

Additional context For example if the file '100-80.npy' is given as the argument, then display only the predecessors of '100-80.npy' instead of the whole family tree.

Note: You only start working on the feature if a maintainer approves that request in discussion.