Add eslint-plugin-vue + Refactor

[didoda]

This adds eslint-plugin-vue and refactorizes code, using yarn run eslint --fix resources/js

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01% ⚠️

Comparison is base (7eb1dac) 99.64% compared to head (bc9ae67) 99.63%.

❗ Current head bc9ae67 differs from pull request most recent head 1db22c5. Consider uploading reports for the commit 1db22c5 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #996      +/-   ##
============================================
- Coverage     99.64%   99.63%   -0.01%     
+ Complexity     1144     1135       -9     
============================================
  Files            90       90              
  Lines          4464     4426      -38     
============================================
- Hits           4448     4410      -38     
  Misses           16       16              

Files Changed	Coverage Δ
src/View/Helper/LayoutHelper.php	100.00% <100.00%> (ø)

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