Moving Google Analytics requests to backend

[AuraOfDivinity]

Problem

As discussed in the previous meeting there was an issue with authenticating all the users of the application within the clientside implementation at https://github.com/codeuino/social-platform-donut-frontend/pull/529.

Solution of problem

How did you solve this problem? This is fixed in this PR with the use of a google service account. Any user hitting the endpoints introduced in this PR would be able to get a response with the required details without any issue

Type of Change

• [ ] Bug fix
• [x] New Feature
• [ ] Development of UI/UX prototypes
• [ ] Small refactor
• [ ] Change in Documentation

Checklist

• [x] My code follows the same style as the codebase
• [x] My Code change requires a change in documentation
• [x] I have updated the Readme accordingly
• [x] I made PR against development branch
• [x] I have run the test cases locally and it's passing.
• [x] I have squashed my commits

[devesh-verma]

@AuraOfDivinity, please resolve conflicts