Improve documentation (#126)

[pablotis]

• add tests for hgch_bar family functions

• add title and description for DESCRIPTION file

• add github actions for README renderization

• add README file

• add hgch-line tests

• add hgch-scatter test

• add hgch-treemap tests

• add hgch-bar tests

• add hgch-pie-donut tests

• add hgch-sankey tests

• update README

• add vignette template

• add package webpage

• update README file

• add bar plots vignette

• update package dependencies

• Update README

• update README file

• complete tests

• complete DESCRIPTION and LICENC files

• Improve vignette

• fix dependences issues

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[CamilaAchuri]

Task linked: DSKTCH-109 Agregar documentacion