Add pull request template for flint

[Tlazypanda]

Fixes #51 Added pull request template in .github folder to ease the process of making pull requests and to follow guidelines.

[gmajan]

Sneha, thank you for this. Can you please make sure that the contributor has to sign off? By adding their email contributors confirm that they comply with the DCO:
"Sign your message with Signed-off-by: Random J Developer [email protected] to agree to Developer Certificate of Origin (DCO) (to certify that you wrote or otherwise have the right to submit your contribution to the project.)"
For more see here https://github.com/moja-global/About_moja_global/blob/master/Contributing/How-to-Contribute-Code.md

[Tlazypanda]

Hey @gmajan I have updated the pull request ✌️

[Tlazypanda]

Hey @gmajan Yeah the --signoff command works, there is even a shorthand for it just -s so the command will be basically like git commit -s -m "my first commit" or git commit --signoff -m "my first commit" You can find more information here https://github.com/git/git/blob/b2c150d3aa82f6583b9aadfecc5f8fa1c74aca09/Documentation/git-commit.txt#L154-L161

We can add this one too but I felt the other one might be a tad bit more convenient for developers 😅 Your call ✌️

[gmajan]

Great. I am with you. Sorry for my ignorance and thank you for the link. Can we turn back the suggestion and then I will merge.
thx

[Tlazypanda]

@gmajan please always share your feedback, it always helps to figure out in-case I missed something out or if there is a better way to solve a problem ✌️ This is the way we will learn and grow together 🎉

[Tlazypanda]

@gmajan Updated pull request 🎉