Add missing dependencies

[rescalan]

I noticed that the following dependencies needed to be installed in order to run safetyGraphics {esquisse}, {Tendril}, {Tplyr}, {kableExtra} however they are not listed in DESCRIPTION. I will add them in a PR.

[jwildfire]

Thanks for the issue/PR!

{Tplyr} and {kableExtra} are all actually called in {safetyCharts}, so I've filed an issue there. Will accept the PR to add {esquisse} shortly.