feat: add @rneui/layout

[arpitBhalla]

npm

Snack

[bartvanandel]

We've been using that package in a WIP app, but we switched to a custom View component instead after running into too many issues with this package. I haven't kept a list unfortunately, but we did find that changing styling of a parent component could cause items to disappear from the screen when using <Stack /> for instance. I wouldn't consider this production ready (hence the alpha in the version, presumably).

One reason for adding this package though would be that some of the examples rely on it, and don't actually work without it currently.

[codecov]

Codecov Report

Merging #3648 (20b4243) into next (f5f5812) will decrease coverage by 0.57%.
The diff coverage is 57.44%.

❗ Current head 20b4243 differs from pull request most recent head ab9dfb7. Consider uploading reports for the commit ab9dfb7 to get more accurate results

@@            Coverage Diff             @@
##             next    #3648      +/-   ##
==========================================
- Coverage   79.42%   78.85%   -0.58%     
==========================================
  Files          87       93       +6     
  Lines        1823     1868      +45     
  Branches      806      836      +30     
==========================================
+ Hits         1448     1473      +25     
- Misses        370      390      +20     
  Partials        5        5              

Impacted Files	Coverage Δ
packages/layout/src/Grid/Grid.tsx	0.00% <0.00%> (ø)
packages/layout/src/Grid/GridItem.tsx	0.00% <0.00%> (ø)
packages/layout/src/Grid/index.tsx	0.00% <0.00%> (ø)
packages/layout/src/Stack/index.tsx	0.00% <0.00%> (ø)
packages/layout/src/Box/index.tsx	100.00% <100.00%> (ø)
packages/layout/src/system/makeStyles.ts	100.00% <100.00%> (ø)
packages/base/src/Tab/Tab.tsx	57.14% <0.00%> (-3.18%)	⬇️
packages/base/src/Avatar/Avatar.tsx	97.22% <0.00%> (ø)
packages/base/src/Button/Button.tsx	90.66% <0.00%> (ø)
packages/base/src/Switch/Switch.tsx	100.00% <0.00%> (ø)
... and 5 more

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[arpitBhalla]

Hey @bartvanandel, I just release another alpha for this pkg, would it be possible for you to test Stack and Box component?