Github actions for more connectivity!

**We can implement github workflows for the following things:**

1. Auto comment on issue **Closed** and **Opened**
2. Auto comment on **PR mergs**
3. Auto comment on **PR raises**

Using this workflows makes you'r repo more interactive ! @abhishekraoas 

_**i'm expecting a level3 with gssoc-ext and hacktoberfest-accepted label**_