Revamp resources on this repo

[smbuthia]

This PR contains ongoing updates to the resources on the WHO open source communication channel repo to stay up to date with developments in the Open Source Program Office.

https://github.com/WorldHealthOrganization/open-source-communication-channel/issues/39

[welcome[bot]]

Thank you for opening this pull request! We appreciate your contributions! Please check out our contributing guidelines.

[smbuthia]

Thanks, @Link- . Still setting things up from our side but we'll definitely do that.

[welcome[bot]]

Congrats on merging your first pull request! We here at WHO appreciate your time and contribution!

[malakumar85]

Agreed with Bassem. @smbuthia - you should add yourself as a reviewer in the CODEOWNERS file: https://github.com/WorldHealthOrganization/open-source-communication-channel/blob/main/.github/CODEOWNERS