Selectable item renderer

[AydinHassan]

Abstract away some of the duplicated renderer code for selectable items

[codecov-io]

Codecov Report

Merging #231 into master will increase coverage by 0.54%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #231      +/-   ##
============================================
+ Coverage     92.07%   92.61%   +0.54%     
+ Complexity      615      612       -3     
============================================
  Files            35       36       +1     
  Lines          1854     1829      -25     
============================================
- Hits           1707     1694      -13     
+ Misses          147      135      -12

Impacted Files	Coverage Δ	Complexity Δ
src/MenuItem/RadioItem.php	100% <100%> (ø)	17 <0> (-4)	⬇️
src/MenuItem/SelectableItemRenderer.php	100% <100%> (ø)	9 <9> (?)
src/MenuItem/MenuMenuItem.php	91.17% <100%> (+7.84%)	15 <0> (-4)	⬇️
src/MenuItem/CheckboxItem.php	100% <100%> (ø)	16 <0> (-4)	⬇️
src/MenuStyle.php	98.9% <0%> (+2.19%)	77% <0%> (ø)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d97347e...7ba829f. Read the comment docs.