Feature: Should be able to Align text vertically in center when merging two or more rows in the table.

## Description
In Google sheets we are able to merge two or more consecutive rows and the text written in the merged cell can be aligned vertically as needs.

I am creating some curriculum for some course that should look like this. This feature is also unavailable in Google Docs. Attaching images from Sheets.


## Impact
Feature is useful for educators who are teaching online and wants to provide a detailed curriculum/syllabus of the course. This is not a blocking feature though but a well formatted syllabus