Added Support page

[mrajagopal]

• Include information on nginx-supportpkg-for-k8s tool
• Provide links to various support channels

Proposed changes

Describe the use case and detail of the change. If this PR addresses an issue on GitHub, make sure to include a link to
that issue here in this description (not in the title of the PR).

Checklist

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• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[github-actions]

✅ All required contributors have signed the F5 CLA for this PR. Thank you!
_{Posted by the CLA Assistant Lite bot.}

[mrajagopal]

I have hereby read the F5 CLA and agree to its terms

[ADubhlaoich]

Generally LGTM though I have a lot of edit suggestions.

Blocking this for merge because there is one change not included I could not cover in an edit suggestion: all of the weights for the other pages need to be updated if this is intended to bt at the very top. The second page should have its weight changed to 200, the third to 300 and so forth.

[ADubhlaoich]

There are 5 existing pages in this section: with the new document there should be changes in for all 5.

[mrajagopal]

There are 5 existing pages in this section: with the new document there should be changes in for all 5.

Apologies @ADubhlaoich, I mess-up the order.
This has been corrected with the latest commit.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.20%. Comparing base (c099abe) to head (9b61529).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6467      +/-   ##
==========================================
- Coverage   53.21%   53.20%   -0.01%     
==========================================
  Files          85       85              
  Lines       16016    16018       +2     
==========================================
  Hits         8523     8523              
- Misses       7085     7087       +2     
  Partials      408      408              

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