[ui] Service/Application charts values, add support for complex types

[torchiaf]

Needs to support Chart values - complex types.

References:

• [ui] Supply service chart values when creating a service #300 (comment)
• docs: https://deploy-preview-265--epinio-docs-staging.netlify.app/next/howtos/using_custom_service_values

[richard-cox]

Had a look at the docs, they support maps and also mixtures of arrays and maps.

We should be able to handle maps (something like keyvalue with uneditable keys). For anything else we may need to show a json editor and validate context locally?

• map with simple values
• array with simple values
  • there doesn't seem to be an indication in the service spec if something should be an array or not
• array with maps
  • same as above, see [ui] Service/Application charts values, add support for array of maps #376
• map as value
  • this will be challenging to include in a fixed form. we would need to be able to determine from spec if the type is a map... and probably just show free text

There seems to be a lot going on here that isn't supported in app values (which are just simple values - https://deploy-preview-265--epinio-docs-staging.netlify.app/next/howtos/create_custom_appcharts).

[thehejik]

see another ref. epinio/epinio#2485