Add major/minor grid lines to grids popover

[bluelinden]

This PR adds a major/minor grid line system that allows for better usability of precise grids when zoomed farther out.

The implementation is inspired by Inkscape's.

*note: this PR contains a few segments initially written using AI and then iterated upon and fixed by me, a human. I take responsibility for any and all bugs found in the updated portions of the grid rendering code, and I am confident that the work is human-quality.

[Keavon]

!build

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[Keavon]

!build

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[timon-schelling]

@Keavon what this will also need to be moved to the branding repo right?
How should we handle this for now?

[bluelinden]

@Keavon this needs to be added to the branding repo

[timon-schelling]

!build

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[timon-schelling]

!build

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[Keavon]

!build

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[timon-schelling]

!build

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[timon-schelling]

Sorry for taking so long to take a look, Code looks good in general.
We need to rebase though.
(And the dot may be moved to the branding repo, not because it's copyrightable, but to keep all icons in one place. @Keavon)

I may have noticed one logic bug, lines and dots don't match the same pattern here.

And If I remember correctly I somehow got into a state where the second color selection element would not disappear with 1 1 1, but I'm not able to reproduce that, not a blocker in my opinion.