feat: add option to cancel Row Detail opening

[ghiscoding]

• user can now prevent event and return false on onBeforeRowDetailToggle event to cancel opening certain Row Detail, for example the code below would block opening Row Detail when its id is 1

detailView.onBeforeRowDetailToggle.subscribe(function(e, args) {
  // you coud cancel opening certain rows
  if (args.item.id === 1) {
    e.preventDefault();
    return false;
  }
  console.log('before toggling row detail', args.item);
});

[codecov]

Codecov Report

Merging #1125 (77f08e5) into master (fdc79a8) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master     #1125   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          245       245           
  Lines        16846     16847    +1     
  Branches      6044      6045    +1     
=========================================
+ Hits         16846     16847    +1     

Files	Coverage Δ
...s/row-detail-view-plugin/src/slickRowDetailView.ts	100.00% <100.00%> (ø)