feat: Drag-Fill capability and Hybrid SelectionModel plugin

[ghiscoding]

Thanks to Ben (6pac) for starting this new feature in SlickGrid repo:

New HybridSelectionModel combines cell and row selection models. It functions like CellSelectionModel except when certain conditions switch it into RowSelectionModel. If the options.rowSelectOverride function exists, then HybridSelectionModel calls it expecting a boolean return to determine whether to behave like RowSelectionModel. If this option is not set, then selection of a column that is a member of the array options.rowSelectColumnObjectArr will be treated with the behaviour of RowSelectionModel.

Drag and Replace option mirrors Excel as closely as possible. When a range of cells is selected, a grey box appears at the bottom right of the selection area, and dragging that grey box expands the selection area and replaces the newly selected cells will the contents of the existing cells. Excel specifically only allows expansion horizontally or vertically, but here we allow both. The current behaviour may be modified. Note that the spreadsheet example the FormulaEditor causes problems with this new feature because it creates a new CellRangeSelector each time a cell is edited. This editor needs to add an event to the existing grid's CellRangeSelector, or create a new one.

It's still at the very early stage and there's thing that would need a bit of polishing

TODOs

• add new Hybrid Model
• add 2 new Examples
• add Cypress E2E tests for both examples
• add full unit test coverage
• add Hybrid Mode to Extension Service
• use rowSelectionOptions grid options as plugin options
• drag-shrink is not behaving as a user would expect (not like Excel) (could be improved in the future)
• replicate 2 new Examples to all frameworks
• test new Hybrid Selection Model with auto-scroll
• is this new HybridSelectionModel a complete merge of the previous 2 models?
  • merge SlickCellSelectionModel and SlickRowSelectionModel into new SlickHybridSelectionModel
  • if it is, can we get rid of the previous 2 and keep this new one but only in next major
• test with Row Detail
• add documentations

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.0%. Comparing base (f12818d) to head (1df4679).
⚠️ Report is 7 commits behind head on master.

Additional details and impacted files

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  Coverage   100.0%   100.0%            
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  Files         196      197     +1     
  Lines       17051    17443   +392     
  Branches     4639     4766   +127     
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+ Hits        17051    17443   +392     

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commit: 1df4679

[ghiscoding]

and there you have it... done!

It does increase the zip file by 3Kb but it should be decreasing back to similar size in the next major version because I expect to simply drop SlickCellSelectionModel & SlickRowSelectionModel and keep only SlickHybridSelectionModel in the future. For now we'll have all 3 models and user will have to enable this new Hybrid model via enableHybridSelection (not sure if I'll keep this flag in the future or not)