This PR modifies the path schema of `approle/path_role.go`, switching the old `Callbacks` to the equivalent `Operations` objects with a list of response fields for the 200 responses. This will allow us to generate a response structures in openapi.json. This PR is split out from #18055 along with #18192.
### Example
For `GET "/auth/approle/role/{role_name}/bind-secret-id"` path, it will update the response as follows:
```diff
"responses": {
"200": {
"description": "OK",
++ "content": {
++ "application/json": {
++ "schema": {
++ "$ref": "#/components/schemas/ApproleRoleBindSecretIdResponse"
++ }
++ }
}
}
}
```
And will add the actual response structure:
```diff
++ "ApproleRoleBindSecretIdResponse": {
++ "type": "object",
++ "properties": {
++ "bind_secret_id": {
++ "type": "boolean",
++ "description": "Impose secret_id to be presented when logging in using this role. Defaults to 'true'."
++ }
++ }
++ },
```
Anton Averchenkov