Feature/implement grid layout

[DarkSide666]

implementation + small demo

[romaninsh]

Good initial draft...

[codecov]

Codecov Report

Merging #662 into develop will increase coverage by 2.94%.
The diff coverage is 100%.

@@              Coverage Diff              @@
##             develop     #662      +/-   ##
=============================================
+ Coverage      69.82%   72.76%   +2.94%     
- Complexity      1864     1868       +4     
=============================================
  Files            101      102       +1     
  Lines           4394     4417      +23     
=============================================
+ Hits            3068     3214     +146     
+ Misses          1326     1203     -123

Impacted Files	Coverage Δ	Complexity Δ
src/GridLayout.php	100% <100%> (ø)	4 <4> (?)
src/Label.php	57.14% <0%> (-28.58%)	6% <0%> (ø)
src/ItemsPerPageSelector.php	65.51% <0%> (-3.45%)	11% <0%> (ø)
src/Table.php	86.23% <0%> (+1.21%)	111% <0%> (ø)	⬇️
src/View.php	82.26% <0%> (+1.22%)	142% <0%> (ø)	⬇️
src/FormField/DropDown.php	90.9% <0%> (+1.81%)	30% <0%> (ø)	⬇️
src/FormLayout/_Abstract.php	86.36% <0%> (+3.03%)	32% <0%> (ø)	⬇️
src/Lister.php	72.88% <0%> (+3.38%)	23% <0%> (ø)	⬇️
src/FormLayout/Generic.php	100% <0%> (+8.86%)	34% <0%> (ø)	⬇️
... and 13 more

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[codecov]

Codecov Report

Merging #662 into develop will decrease coverage by 0.43%.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             develop     #662      +/-   ##
=============================================
- Coverage      69.82%   69.39%   -0.44%     
- Complexity      1864     1868       +4     
=============================================
  Files            101      102       +1     
  Lines           4394     4417      +23     
=============================================
- Hits            3068     3065       -3     
- Misses          1326     1352      +26

Impacted Files	Coverage Δ	Complexity Δ
src/GridLayout.php	0% <0%> (ø)	4 <4> (?)
src/TableColumn/Status.php	73.52% <0%> (-8.83%)	12% <0%> (ø)

---

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