Janus Kiali Plugin declares a config but does not define one.

[mikeymop]

Describe the bug

A clear and concise description of what the bug is. (provide screenshots if applicable)

When using the latest version of @janus-idp/backstage-plugin-kiali (version 1.8.1 at the timeI noticed that thepackage.jsondefines aconfig.d.tshowever the module bundle does not declare aconfig.d.ts`.

This causes a very hard to resolve error where any parsed plugin after kiali will report an error that their config is not defined.

If you look in the plugin's package.json you will find the following:

"configSchema": "config.d.ts",
"files": [
  "dist",
  "dist-scalprum"
]

Looking at the backstage docs, config.d.ts should also be defined in files. Additionally a config.d.ts is not defined in the resulting plugin bundle ./node_modules/@janus-idp/backstage-plugin-kiali/config.d.ts

Expected Behavior

The plugin should either define a configuration schema or remove the declared configuration from it's package.json.

What are the steps to reproduce this bug?

1. Install @janus-idp/backstage-plugin-kiali
2. yarn start in the root of your backstage project
3. Observe the following errors:

File "../../node_modules/@janus-idp/backstage-plugin-kiali/config.d.ts" not found.
  The file is in the program because:
      Root file specified for compilation

Versions of software used and environment

packag.json:

dependencies: {
    "@janus-idp/backstage-plugin-kiali-backend": "^1.8.1"
}

[aljesusg]

This is weird.
config.d.ts

Anyway we need to remove that config.d.ts all configuration is set in the backend let me address this one with my actual PR.

Thanks