Insert better default grids

[ruggi]

Problem:

1. When creating a grid layout from the inspector the default grid should be 2x2 with a 10px gap
2. There should be an insert menu entry in the canvas toolbar for a 3x3 grid with a 10px gap
3. There should be an entry for a grid in the floating component picker too

Fix:

Implement all of the above:

Kapture.2024-10-10.at.14.34.11.mp4

Note: the icon for the grid is the one used for the navigator, there should be a dedicated one with the right size (16x16) for the canvas toolbar as well.

Fixes #6511

[github-actions]

Try me

[relativeci]

#14721 Bundle Size — 57.94MiB (~+0.01%).

0501054(current) vs 916e8b9 master#14701(baseline)

Warning

Bundle contains 70 duplicate packages – View duplicate packages

Bundle metrics   2 changes 1 regression

	Current #14721	Baseline #14701
Initial JS	40.94MiB(~+0.01%)	40.94MiB
Initial CSS	0B	0B
Cache Invalidation	17.94%	17.91%
Chunks	21	21
Assets	23	23
Modules	4145	4145
Duplicate Modules	213	213
Duplicate Code	27.32%	27.32%
Packages	477	477
Duplicate Packages	70	70

Bundle size by type   2 changes 1 regression 1 improvement

	Current #14721	Baseline #14701
JS	57.93MiB (~+0.01%)	57.93MiB
HTML	7.37KiB (-0.25%)	7.39KiB

Bundle analysis report Branch feat/insert-grid-2x2-3x3 Project dashboard

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