Enumerates SkAdNetwork coarse conversion values

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/enums/sk_ad_network_coarse_conversion_value.proto)

| Enums ||
|---|---|
| ## `HIGH` | A high coarse conversion value. |
| ## `LOW` | A low coarse conversion value. |
| ## `MEDIUM` | A medium coarse conversion value. |
| ## `NONE` | A coarse conversion value was not configured. |
| ## `UNAVAILABLE` | The value was not present in the postback or we do not have this data for other reasons. |
| ## `UNKNOWN` | The value is unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |