add gt_split into utils

[Schiano-NOAA]

What is the feature?

• adding the gt_split function from the gt package into asar that includes the fix for the function

How have you implemented the solution?

• see gt PR

Does the PR impact any other area of the project, maybe another repo?

• no

[github-actions]

Checklist

• PR base branch is accurate
• Is the code concise?
• Comments are clear and useful.
• Can you remove or combine any arguments?
• Do argument contain defaults (if appliable)?
• Code is documented and example provided (Roxygen).
• Did you make a test (testthat)?
• Was this tested under multiple scenarios?
• Did you run devtools::check()?