Reference docs: OAS Resource generation - kuadrantctl

[jasonmadigan]

What

Create some detailed reference docs for kuadrantctl commands & functionality, covering general usage but also OAS/GWAPI resource generation.

How

Some existing guides can be used / extended to flesh this content out:

https://github.com/Kuadrant/kuadrantctl/blob/main/doc/generate-gateway-api-httproute.md
https://github.com/Kuadrant/kuadrantctl/blob/main/doc/generate-kuadrant-auth-policy.md
https://github.com/Kuadrant/kuadrantctl/blob/main/doc/generate-kuadrant-rate-limit-policy.md
https://github.com/Kuadrant/kuadrantctl/blob/main/doc/openapi-kuadrant-extensions.md

• Create a new sub-section beneath the components nav on docs.kuadrant.io for kuadrantctl
• Link to the above guides as reference material and extend as we see fit

Seperately, we'll build out tutorials for usage of kuadrantctl - this issue is only concerned with reference docs for kuadrantctl:

#53
https://github.com/Kuadrant/docs.kuadrant.io/issues/63]

[jasonmadigan]

Related: #54