feat(oauth2): Define custom scope query param

[Cobalt0s]

Description

This PR introduces the scopeQueryParam field to the OpenAPI specification, enabling providers to specify a custom query parameter name for passing OAuth scopes during authorization.

OpenAPI schema change

Added the following field to the OAuth2 options schema:

scopeQueryParam:
  type: string
  description: |
    The query parameter name used to pass OAuth scopes in the authorization URL.
    Defaults to "scope" when not specified. Some providers use a different
    parameter name, such as "user_scope" for Slack user scopes.
  example: user_scope
  x-go-type-skip-optional-pointer: true

All other file changes in this PR are automatically generated from this schema update.

Documentation update

Added installation instructions for the rdme linter to the README:

npm install -g rdme

Motivation

This change is required to support Slack's user-scoped OAuth flow, which uses user_scope instead of the standard scope query parameter. The field is optional and config users should default to scope when nothing is specified, ensuring backward compatibility with existing providers.

[Cobalt0s]

• feat(oauth2): Define custom scope query param #391 👈 (View in Graphite)
• main

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