Docs for kagent integration in standalone and kube

[howardjohn]

• standalone, because kagent is deployed in a kube cluster, having a standalone guide might not make sense. Focus on kubernetes mode instead.
• kube version, could try to go through and clean up what is currently in the standalone section: https://agentgateway.dev/docs/standalone/main/integrations/web-uis/kagent/, the YAMLs are not working
• update the upstream kagent docs to link back to this integration with agentgateway

[Roniscend]

I want to work on this issue can you assign this to me

[artberger]

@Roniscend this isssue is being looked into by @Lasse4 as part of the LFX mentorship.

[artberger]

@Roniscend if you are interested in a similar issue, there is this one to verify the other web UIs that were in that doc section, like Goose: #457

[Roniscend]

@Roniscend if you are interested in a similar issue, there is this one to verify the other web UIs that were in that doc section, like Goose: #457

Ok Sure I will look into it
Thanks