docs: add jina ai cloud restructure jcloud and hub

[hanxiao]

• add login
• put jcloud and hub under jina ai cloud
• rename jina hub to executor hub

[codecov]

Codecov Report

Merging #5298 (3794fb2) into master (8cedfd3) will increase coverage by 6.60%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5298      +/-   ##
==========================================
+ Coverage   79.20%   85.80%   +6.60%     
==========================================
  Files          99       99              
  Lines        6544     6544              
==========================================
+ Hits         5183     5615     +432     
+ Misses       1361      929     -432     

Flag	Coverage Δ
jina	85.80% <ø> (+6.60%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
jina/serve/instrumentation/_aio_server.py	77.14% <0.00%> (-11.43%)	⬇️
jina/orchestrate/deployments/config/k8s.py	100.00% <0.00%> (+0.61%)	⬆️
jina/clients/base/websocket.py	88.57% <0.00%> (+0.95%)	⬆️
jina/clients/base/grpc.py	87.14% <0.00%> (+1.42%)	⬆️
jina/clients/mixin.py	95.00% <0.00%> (+1.66%)	⬆️
.../runtimes/request_handlers/data_request_handler.py	94.26% <0.00%> (+1.91%)	⬆️
...a/orchestrate/deployments/config/docker_compose.py	99.01% <0.00%> (+1.96%)	⬆️
jina/serve/runtimes/gateway/request_handling.py	96.73% <0.00%> (+2.17%)	⬆️
jina/serve/runtimes/asyncio.py	84.07% <0.00%> (+2.65%)	⬆️
jina/clients/base/http.py	94.59% <0.00%> (+2.70%)	⬆️
... and 43 more

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[alexcg1]

A few small changes and questions

[alexcg1]

Huh, last time I did the review GitHub thought I was just commenting. I've requested some changes

[github-actions]

📝 Docs are deployed on https://docs-jina-ai-cloud--jina-docs.netlify.app 🎉

[github-actions]

📝 Docs are deployed on https://docs-jina-ai-cloud--jina-docs.netlify.app 🎉

[alexcg1]

@hanxiao given the failing k8s test, should I still go ahead and merge? Don't see how that test could fail given that this is just docs, but I'd rather be safe than sorry.

CCing @JoanFM @samsja @JohannesMessner for an answer