Include `grace` in LinearScaleOptions type definition (#8847)
Include `grace` in LinearScaleOptions type definition (#8847)

This commit adds the `grace` option, to the LinearScaleOptions type definition
as documented here,
https://www.chartjs.org/docs/latest/axes/cartesian/linear.html#grace. Without
this commit the TS compiler does not allow the option.

Signed-off-by: Moses Mendoza <da63e3482d17f9cd6a9b188f0d72449d4031304e@gmail.com>
touletan/Chart.js,chartjs/Chart.js,touletan/Chart.js,touletan/Chart.js,chartjs/Chart.js,nnnick/Chart.js,touletan/Chart.js,chartjs/Chart.js,chartjs/Chart.js