Adding Netlify functions to hide API key from Network call

[krtEngineer]

@R0Y15 I observed that API key for open weather map api is visible in network call.
I am suggesting an enhancement to hide this API key using netlify serverless functions.

I would request to assign this issue to me. I already implemented such functions. Here is a blog on my web site on how to implement such functions: https://kurati.dev/tils/02_netlify_serverless_functions_demo

[R0Y15]

Sure, please Go ahead.

[krtEngineer]

@R0Y15 Added PR for this issue: #114

[krtEngineer]

@R0Y15 After this PR gets merged I will raise another PRs for using this Netlify function to fetch Weather Data wherever in code Open Weather API is called. A separate PR would be good with separate issue. This is easy for review. Please review this PR #114