Action buttons on per-row base

[emptynick]

This PR makes it possible to show/hide action buttons on a per-row base by implementing a method called shouldActionDisplayOnRow($row):

<?php

public function shouldActionDisplayOnRow($row)
{
    return $row->someField >= 10;
}

[codecov-commenter]

Codecov Report

Merging #5355 (9db5663) into 1.5 (39be175) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                1.5    #5355      +/-   ##
============================================
+ Coverage     63.51%   63.53%   +0.01%     
- Complexity     1399     1400       +1     
============================================
  Files           195      195              
  Lines          4133     4135       +2     
============================================
+ Hits           2625     2627       +2     
  Misses         1508     1508              

Impacted Files	Coverage Δ
src/Actions/AbstractAction.php	85.00% <100.00%> (+1.66%)	⬆️

---

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 39be175...9db5663. Read the comment docs.