Add new API Property - independence_year

[sthiepaan]

After short introduction in #32 we decided to extend this package with independence_year Property:

• independence_year Property is a Number of year when country became independent
• For countries that have no year available it should be set to 0, null or year when country was settled (TBD)

After adding new property, each Country {Object} should contain:

{
  "country": "poland",
  "capital": "warsaw",
  "currency": "zloty",
  "native_language": ["polish"],
  "famous_for": "pierogi and potatoes",
  "phone_code": "+48",
  "flag": "https://flagpedia.net/data/flags/h80/pl.png",
  "drive_direction": "right",
  // NEW DATA
  "independence_year": 1918
},

Additionally there will be new method to use that data:

• getCountriesByIndependenceYear(independenceYear)
• getCountriesByIndependenceYearRange(fromYear, toYear)

[Koushith]

Hii, I'm a newbie developer. can you please assign this to me?

[bhatvikrant]

@sthiepaan will you be taking up this issue? or should I assign it to @Koushith ?

[sthiepaan]

@Koushith can take it if all is clear to him 😉

[bhatvikrant]

I think the task is fairly simple tho, do you understand it fully @Koushith?
If yes, then you can pick it up bud and I'll assign it to you.

[jav7zaid]

@bhatvikrant let me know if can take this as well. @Koushith are you on it ?

[Koushith]

@bhatvikrant yeah. I'm working on it. 👍

[sthiepaan]

What is the status of your work so far @Koushith? 😉

[sthiepaan]

Since there is no response from @Koushith, I will take care of that Issue