feat: extensions readme generator

[migmartri]

Generator that updates the loaded extensions Readme files with the input JSON schemas in both raw and table mode.

This generator is now part of the extension development process. The CI checks that the readmes are up to date.

This patch also

• updates some of the extension directories/names to be consistent. i.e extension id == directory-name
• Updates all the readme files
• Factors out some of the code related to schema properties mapping, extracting them from the CLI and moving them to the SDK
• This generator is idempotent and works in both the cases where the section to populate exists or not.

Example

Registration Input Schema

Field	Type	Required	Description
password	string	yes	OCI repository password
repository	string	yes	OCI repository uri and path
username	string	yes	OCI repository username

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/chainloop-dev/chainloop/app/controlplane/extensions/core/oci-registry/v1/registration-request",
  "properties": {
    "repository": {
      "type": "string",
      "minLength": 1,
      "description": "OCI repository uri and path"
    },
    "username": {
      "type": "string",
      "minLength": 1,
      "description": "OCI repository username"
    },
    "password": {
      "type": "string",
      "minLength": 1,
      "description": "OCI repository password"
    }
  },
  "additionalProperties": false,
  "type": "object",
  "required": [
    "repository",
    "username",
    "password"
  ]
}

Attachment Input Schema

Field	Type	Required	Description
prefix	string	no	OCI images name prefix (default chainloop)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/chainloop-dev/chainloop/app/controlplane/extensions/core/oci-registry/v1/attachment-request",
  "properties": {
    "prefix": {
      "type": "string",
      "minLength": 1,
      "description": "OCI images name prefix (default chainloop)"
    }
  },
  "additionalProperties": false,
  "type": "object"
}

• Refactor generator code
• Add generator make target
• Run in CI

[danlishka]

Should we have a separate section with an info on which materials, attestations are supported?

### Supported metadata
The following metadata are supported by this extension:

Materials: CycloneDX
Attestations:  unsupported

[migmartri]

Yeah, this could be used as a baseline. The scope was just schema for now. but I could see value in generating description input types and so on. Should we do it in another diff?

[danlishka]

LGTM I would also add which metadata are supported in the future