Add a11y tables for all graphs

[catileptic]

Every graph needs to have the data available in tabular format, following the example of the Cases per day card.

Add such tables for:

• Doze de vaccin administrate pe zile (Vaccines per day)
• Cazuri per categorie de vârstă, în timp (Age category)
• Cazuri după vârstă (Age)

[Utwo]

We already have the tables but we don't know how to properly display them only for screen readers. Hiding them with .sw-only css class will add a long scroll bar on chrome. https://github.com/code4romania/covid-19-date-la-zi/pull/423

Anyone is more then welcome to look into this problem.

[swoopstyle]

I offer tribute! Happy to help

[Utwo]

Sure, let me know if we can help you with the project setup or any other questions ;)

[catileptic]

This Issue still needs tables for the other remaining graphs :)

[GabrielMajeri]

@catileptic I want to work on this!