Add support for the ability to disable column virtualization

[budnix]

Context

The PR adds support for the ability to disable column virtualization throughout the new renderAllColumns option.

In conjunction with the renderAllRows option, developers have the ability to disable virtualization for the whole table.

Option combinations summary

renderAllColumns: true,
renderAllRows: false,

Disables the column's virtualization only. This setup only makes sense when there is no vertical scroll (many columns and few rows). Due to the table nature where columns are related to rows (TD are children of TR), additional cell renders in all columns will be triggered when the vertical scroll changes, causing rows to re-render. The best setup for renderAllColumns is to disable the rows virtualization as well.

renderAllColumns: true,
renderAllRows: true,

In this case, the cells are rendered only once, no matter how big the dataset is. For both axes, there is a logged warning in the console that informs that there will be a performance drop if you disable the virtualization for 1000 or more records. And last one:

renderAllColumns: false,
renderAllRows: true,

Disables virtualization for rows. The horizontal scroll does not affect the rows to re-render.

Other changes

• Simplify the ViewportColumnsCalculator calculator by extracting the calculation of the stretching width to a separate module;

How has this been tested?

I tested the changes locally and I covered the feature with new tests.

Types of changes

• New feature or improvement (non-breaking change which adds functionality)

Related issue(s):

1. fixes https://github.com/handsontable/dev-handsontable/issues/1457

Affected project(s):

• handsontable

Checklist:

• I have reviewed the guidelines about Contributing to Handsontable and I confirm that my code follows the code style of this project.
• I have signed the Contributor License Agreement
• My change requires a change to the documentation.

[github-actions]

Launch the local version of documentation by running:

npm run docs:review d230c64db1ebf8d79a71554fc958fbf53bcc53c9