Adding degree centrality function

[TheMLEngineer]

Test :

As this is my first pull request on this repo , if any more testing need to be done please let me know. Thanks.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[TheMLEngineer]

Hi @IvanIsCoding , Thanks for the review comments , will check and update

[Paulo-21]

Hello, any news about this feature ?

[IvanIsCoding]

@Paulo-21 this Pull Request currently does not build. However, contributions are welcome and I believe #1129 would be fairly straightforward if you want to send a PR implementing it