[ENCHANCEMENT] Additional Functionality for Playbars

[Trofem]

Does this PR close any issues? If so, link them below.

Fixes #4141

Briefly describe the issue(s) fixed.

Enhancement:
This PR adds turning on/off logic for all playbars:

Difficulty (playbarDifficulty)

• Ctrl + Click -> open/close Difficulty Window

BPM (playbarBPM)

• Ctrl + Click -> open/close Metadata Window

Note Snap (playbarNoteSnap)

• Ctrl + Click -> open/close Note Window

Song Remaining Time (playbarSongRemaining) (new toolbox function)

• Click -> open/close Offsets Window

Also:

• Since this is change connected with Chart Editor playbars tooltips, also required to accept assets repo PR in order to UI tooltip to look corretly
  ( #132 funkin.assets ).
• This repo is made on basis Chart editor window toggle fix #4143 solution, that help with fixing its bug.

Include any relevant screenshots or videos.

2025-02-26.03-22-24.mp4

[Lasercar]

Hey, allow me to welcome you for making your first PR!

Though usually, when you have an issue with an existing PR, you simply request changes on it, rather than making your own that makes the change, plus doing more.

I'd make this PR only do the additional changes you've made, and make a PR on my branch for your changes, to mine or suggest changes to it.

[amyspark-ng]

i'd make the remaining time thing to have the same glow these do

[Trofem]

@Lasercar Oh ok, i could make it as addition to yours

[Trofem]

I guess I need to finish this branch and try to PR to yours?

[Lasercar]

Yeah, but keep your additional changes - adding the same functionality to note snap and song remaining time, separate, as I had no part in doing that, ofc.

[Lasercar]

Actually, no, I'll take the loss on this one, there's no way to separate the changes cleanly.

Don't worry about doing that now, I've closed my PR. You can edit the descriptions of your PRs to remove the part about the conflict with mine.

[Trofem]

@Lasercar Oh damn, I guess it will be easier, But I actually used your solution with toolbar.selected, so you are made the contribution with it (Without it I wouldn't have a single idea). I just will change to "made on the basis of" your PR. Ok?

[Lasercar]

Sure! I'm a little surprised that you learned off my code and figured out a better implementation. That's never happened to me before!