feat: Bookmark location model and manager

[cassiosousa]

This pull request includes

• It's adding testing module to project.
• The structure of bookmark location model and manager.

Feat: #13

[henrique-morbin-ifood]

Do you want partial reviews or do you prefer we wait until you say it is ready for review?

[cassiosousa]

Thank you Henrique, I don't have see your comment, but now is available to full review.

[cassiosousa]

Henrique,

I started to work at the view of bookmarkLocation. Those corners are giving work :), but it will be rewarding.

[henrique-morbin-ifood]

@cassiosousa give a better PR title please.

[henrique-morbin-ifood]

@cassiosousa what did you mean with: Full backend to Add button ?

[cassiosousa]

@henrique-morbin-ifood

give a better PR title please. what did you mean with: Full backend to Add button ?

I updated the two things.

[henrique-morbin-ifood]

Please, read this comment: https://github.com/lucasmontano/openweathermap-ios/pull/13#discussion_r416745061

[cassiosousa]

Please, read this comment: #13 (comment)

✅ @henrique-morbin-ifood , I go todo that change, it was suggest in the next PR. I also follow this guy hackingwithswift 🙂

[henrique-morbin-ifood]

@lucasmontano LGTM