Add abv% for cocktails on cocktail page

[mikeyhogarth]

We have the abv% for each ingredient - from this it should be possible to calculated the overall abv% for the cocktail and display it. We would need;

• A function that takes a set of ingredients and returns a decimal showing total percentage
• A call to that function in the fetchCocktails function that adds it (in much the same way we're adding the slug there)
• Display it on the views (maybe in the existing subheaders)

This might be a good resource for writing test cases:
https://www.artofdrink.com/blog/alcohol-percentages-of-cocktails?fbclid=IwAR0kWRiv5P8_Yv0iYIcqpM43mHXzzeJ1_fdn_rwqxGoTK9xbhxBe77UVomU

This needs to be calculated rather than hard-coded against each cocktail so that if we ever add new cocktails it'll just all automatically happen.

[TommyJackson85]

I will take up this task @mikeyhogarth

[mikeyhogarth]

I will take up this task @mikeyhogarth

Be my guest dude 😀 I would probably start with the tests on this one (that article I linked to has some calculations, they could basically form the tests).

Absolutely no hurry - I've assigned the issue to you, let me know if you change your mind.