Add auto labeler for PRs and Issues

[ArjunSharda]

Is your feature request related to a problem? Please describe if so, otherwise leave this blank..

Describe the feature
<-- A clear and concise description of the feature. What will it do, what will it affect, etc. -->

This workflow will automatically label PRs and Issues based on the text of the issue / PR.

Provide any alternatives to the feature you've considered
Any other alternatives to the feature request you are asking for if we decide not to go with your feature request?

Additional information
<-- If you have anything additional to say, you can say it here. Otherwise you can leave this blank. -->

I can work on this.

[ArjunSharda]

Not going to work on this atm anymore. If anyone wants to take this up, ping me.

[Mitternachtsmond]

I would like to try this
Please assign me this issue

[blackbeareatsfish]

This may help: https://github.com/apps/auto-labeler https://github.com/jimschubert/labeler