Add an ability to specify charSpace and type for DocumentGrid

[katz]

This PR adds an ability to specify charSpace and type properties of DocumentGrid

.

[codecov-commenter]

Codecov Report

Merging #1323 (e08ad99) into master (75d6272) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1323   +/-   ##
=======================================
  Coverage   99.30%   99.31%           
=======================================
  Files         315      315           
  Lines        3622     3628    +6     
  Branches      457      459    +2     
=======================================
+ Hits         3597     3603    +6     
  Misses         24       24           
  Partials        1        1           

Impacted Files	Coverage Δ
...ent/body/section-properties/properties/doc-grid.ts	100.00% <100.00%> (ø)
...ment/body/section-properties/section-properties.ts	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 75d6272...e08ad99. Read the comment docs.

[dolanmiu]

Looks good!