Partial support for table embed

[CatHood0]

Description

For several versions, we have seen many people asking for support for this custom block, however, due to its complexity, implementing it is not easy. In this PR I will try to add as much support as possible so that the tables work perfectly on most platforms.

Several errors can be seen while using it, such as that when trying to delete a cell, even when there is no longer any text, it duplicates text from the QuillEdtor, or that for now, when we try to delete a row, the last one is deleted instead of the row in which we are positioned, or that could even have problems with the implementation on the Web platform

Any suggestions would be welcome

I'm still improving the implementation since the table doesn't adapt itself to different platforms

Related Issues

Fix #1735

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I titled the PR using Conventional Commits.
• I did not modify the CHANGELOG.md nor the package version in pubspec.yaml files.
• All existing and new tests are passing.
• I have run the commands in ./scripts/before_push.sh and it all passed successfully

Breaking Change

Does your PR require developers to manually update their apps to accommodate your change?

• Yes, this is a breaking change (please indicate that with a ! in the title as explained in Conventional Commits).
• No, this is not a breaking change.

[Paiolus]

I need the code for this please...