Fix #2: Added AC calculator

[Cadesh]

Description of pull request

• Added a Function to calculate AC, the function considers the base AC and add modifiers according to armor max DEX. If no armor, the function checks the profession to add profession specific bonuses.
• I created some tests but did not uploaded them, if you like I can add JEST to the project.
• There is one item missing in the calculation, the use of shields.

Resolves #2

Has it been tested?

• [ X ] Yes
• No
• Testing not needed

[KingFruit85]

Hey @Cadesh looks good to me! While I was checking it I uncovered a bug with how the ability score modifiers are calculated so doubly useful :)

I don't know much about JEST or unit testing in general and would love to learn some so happy for you to implement if you recommend doing so.

Happy for you to merge 👍

[Cadesh]

@KingFruit85 I have no write access to the repo, if you are happy with the PR please merge it to main.

I am going to create a Issue to add Travis and JEST for the Continuous Integration, then I will send a new PR for you to check.