Add friend_manager plugin

[Rafsan3782]

What this adds

A new utility plugin: Friend Manager

Lets you build a real friend list while playing online. Click a player's
name in a party to add them as a friend — their account ID and every
profile name they've played under gets saved automatically, so you'll
recognize them even if they switch profiles later. Notifies you when a
friend joins your party. Full friend list is available from
Settings → Friends.

Plugin details

• File: plugins/utilities/friend_manager.py
• Category: Utilities
• plugman version: 1.0.0
• Author: ItzHacker101

Testing done

• Added a friend via the player popup menu in a party
• Friend list opens correctly from Settings -> Friends
• Friend profile window shows saved profile names + last-seen correctly
• Removing a friend (two-tap confirm) works
• No errors/crashes seen in the dev console during testing

Notes for reviewers

Friend data is stored in its own subfolder (friend_manager_data/friend_list.json)
inside the user's mods/python directory, so it stays organized and the folder
can be copied to another device to carry friends over.

[Rafsan3782]

CI Succeeded
https://github.com/bombsquad-community/plugin-manager/actions/runs/27906843153

[Loup-Garou911XD]

hey, sorry i couldnt get to this earlier but why did u remove this

[Rafsan3782]

hey, sorry i couldnt get to this earlier but why did u remove this

No worries! Sorry about that—I accidentally deleted my fork, which also caused the PR to be deleted.

I'll open a new PR later today or tomorrow. Would you be able to review it when you get a chance?

It's been fully tested, works as expected, and I also made some nice UI improvements.

Thanks!