[Confluence] Audit of SVG

[aninde]

Description

Summary of SVG project. After gathering all the necessary information put it on the Confluence / Projects.

Reference

https://github.com/handsontable/handsontable/issues?q=is%3Aissue+is%3Aopen+svg https://handsontable.com/docs/8.0.0/CustomBorders.html

Chores

• [x] description of the current state of customBorders
• [x] description of the new customBorders (https://github.com/handsontable/quality/issues/17)
• [x] summary of the issues reported by us (including separately by @warpech )
• [x] summary of the issues reported by customers and users (ask @AMBudnik for the forum update)
• [ ] check package size
• [ ] verify with the current trends in browsers
• [x] check is there a breaking change there?
• [x] summary of testing
• [x] summary of regression bugs found during testing
• [x] additionally planning further tests