Add repository stats card

**Is your feature request related to a problem? Please describe.**
it's not related to any of the problem.

**Describe the solution you'd like**
Statistics should be addable in each repo. On Adding Repo viewers could see the repo stats that includes details like numbers commits for that particular repo, total number of contributors, languages used, PR accepted till date and other relevant details if any.
Let's discuss the hurdles if any :)