[FR] Formula support in Grids

### Description

I think it'd be a great feature to have a formula property for grids. Maybe this is somehow possible with the already implemented KateX plugin.
With a formula you can for example calculate the time between two dates in a row and use the grid for time tracking.

### Impact

Users how use appflowy for work and time tracking jobs

### Additional Context

_No response_

Start by locating the grid implementation and reviewing how the existing KateX plugin is integrated. Define how a formula property should calculate values such as the time between two dates, then verify that the resulting formulas work for grid-based time tracking.

Written by the indexing model from the issue text.