Add GitHub actions for the project .

[aashimgarg]

This will be very beneficial for the project.
About me:- GSSoC aspirant.

[aashimgarg]

@sarthology should I work on this issue. Please give your views.

[sarthology]

What actions specifically?

[aashimgarg]

Actions like :-

1. Label merge conflicts
2. Spellcheck.yml
3. Foul-language.yml
4. assign.yml
5. Autosquash commits.yml

[aashimgarg]

Should i start working on them @sarthology ?

[sarthology]

go on

[saloniankita]

Can I work on it @sarthology ?