[Feat]: Plot functions

[vidonne]

Functions that will created pre-stylized plots

• [x] Simple 100% bar
• [ ] Facetted bar
• [ ] Grouped bar
• [ ] Stacked bar

[vidonne]

Clarifications on implementations

1. Plots functions will accept, already pre formatted data, including only the data needed for the chart
2. Mapping options to the aes should be added as arg of the functions (x, y, fill, facet, etc)
3. For simple bar chart, add an argument to select between "percent" and "number" values
4. Potential multiple disaggregation plots, e.g. fill + facet