[Feature] Add focus feature

[S0okJu]

Context

Currently this tool shows all classes. However, if I want to focus on a specific class with a certain depth level, it's difficult to find. Therefore, we need focus features.

Wanted Feature

• Add focus feature to filter class hierarchy display
• Allow users to specify a root class and depth level
• types: incoming, outgoing, all

Examples

• If users set a root class and depth level, show only the classes within that scope
• Example: Root class "UserService", Depth 2 → Show UserService and its direct children/dependencies up to 2 levels

References

• None