Documentation for contributing guide

[0904-mansi]

Hey @RainbowMango !!
There must be a contribution guide for contributors that how can we start the development server of the project on our system. So that we can start contributing to this project and submit our ideas, issue, and PRs to the project.
Thank you!

[RainbowMango]

No guide yet for the website, we do have one at karmada-io/karmada repo.

[0904-mansi]

No guide yet for the website, we do have one at karmada-io/karmada repo.

@RainbowMango if you permit then I can create a readme file for the contribution guide for the contributors:)

[windsonsea]

In a viewpoint of a freshman, it is very helpful if Karmada has a contribution guide about writing and localization.

[RainbowMango]

Yes, double agree. We need that!

[samzong]

pls assgin this issue to me, I will submit a PR within the expected 2 weeks.

[RainbowMango]

@samzong Feel free to assign it by your self next time. :)
/assign @samzong