Adding welcome bot for first timer issue raiser, first PR, first PR merged

[anjali1102]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is.
Whenever someone raises an issue and gives their PR, the bot will interact, greet them.

Describe the solution you'd like
A clear and concise description of what you want to happen.

Do you want to work on it
Mention the one language you want to be assigned for this issue.
Yes, I want to work on this issue.
@tarun26091999 @rudrakshi99

[anjali1102]

Kindly assign me this issue @Rohan27s with level 3

[anjali1102]

@LayaMitta I want to work on this, Can I go ahead

[rudrakshi99]

We have already added Github actions then no need for the bot.

[anjali1102]

Ok