[godot4 port] Creating the bar graph and snapping grid for use with the blocks.

[charlie-sans]

hello.
putting this out there for anyone who want's to tackle this.

for this issue, i'm looking for anyone who want's to create a bar graph and a grid for use with the noteblock asset inside the project.

here are some key rules when creating these.

1. the grid must be allowed to be modified by the user with a slider next to the grid that changes the size of the grid from say 1/8th to 1/16t and anywhere inbetween 1 bar to 1/64.
2. the bar must trigger the blocks when it passes through them to play the sound assoaciated with them.
3. when playing, if the bar goes too far off the edge, return back to the start.
4. the bar must at least be able to be moved with a different slider when not playing and the menu ui designed to hold the sliders and the grid size should at least be able to be dimmed when playing while having no interaction if needed.

those are the key rules for designing the script/ui elements.
if anything is needed, please put it in this issue.