[FEATURE] Add Window Size in VitaLineage

[PranshulDobriyal]

Describe the solution you'd like
Adding window size to the family tree in VitaLineage.

Additional context
Add the feature to display only the members of the generations in a specific window (user input). For example a window size of 2 will mean 2 successors and 2 predecessors of the player will be displayed

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