Add Redocly overlay pattern for InfluxDB v1 OSS and Enterprise APIs,
making them consistent with other products in the repository.
Changes:
- Create .config.yml and content overlays (info.yml, servers.yml) for
both influxdb/v1 and enterprise_influxdb/v1
- Add updateOSSV1() and updateEnterpriseV1() functions to getswagger.sh
- Remove set-tag-groups decorator and all tag-groups.yml files
The tag-groups feature was a Redoc-specific workaround for navigation
grouping that is no longer needed with the Hugo/RapiDoc architecture.