feat: Added TableCellSpacing

[CodingTimeDEV]

Hi all,

this PR adds the possibility to add cell spacing to tables.

According to docs the spacing can be added to a table itself or a row, both versions are implemented here.
(http://officeopenxml.com/WPtableCellSpacing.php).

Link to the docs has also been added to the files.

Checked with eslint => No conflicts
Ran vitest => All tests passed successfully
Ran build => build was successfull

I also went ahead and copied the dist folder into a different project to validate that the cell spacing is in fact applied (Visuals only checked in word).

If you have any further questions or I missed a step in your contributions guide, please give me a heads up and I'll resolve this.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (409ea02) to head (8d4c417).
Report is 7 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #3052   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          290       291    +1     
  Lines         8796      8823   +27     
  Branches      1423      1426    +3     
=========================================
+ Hits          8796      8823   +27     

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[dolanmiu]

Looks great! Merged.