Add support page to troubleshooting section

[mrajagopal]

Version

edge

Details

The aim of this new page is to list various channels to obtain support.
In additional encourage providing additional information using the nginx-supportpkg-for-k8s tool so that F5 support can better troubleshoot the problem.

Contributing Guidelines

• I confirm that I have read the Report a Bug section of the Contributing Guidelines

[github-actions]

Hi @mrajagopal thanks for reporting!

Be sure to check out the docs and the Contributing Guidelines while you wait for a human to take a look at this 🙂

Cheers!