Add Geodata.gov.gr (#2693)

README.md

@@ -803,6 +803,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Geocod.io](https://www.geocod.io/) | Address geocoding / reverse geocoding in bulk | `apiKey` | Yes | Unknown |
 | [Geocode.xyz](https://geocode.xyz/api) | Provides worldwide forward/reverse geocoding, batch geocoding and geoparsing | No | Yes | Unknown |
 | [Geocodify.com](https://geocodify.com/) | Worldwide geocoding, geoparsing and autocomplete for addresses | `apiKey` | Yes | Yes |
+| [Geodata.gov.gr](https://geodata.gov.gr/en/) | Open geospatial data and API service for Greece | No | Yes | Unknown |
 | [GeoDataSource](https://www.geodatasource.com/web-service) | Geocoding of city name by using latitude and longitude coordinates | `apiKey` | Yes | Unknown |
 | [GeoDB Cities](http://geodb-cities-api.wirefreethought.com/) | Get global city, region, and country data | `apiKey` | Yes | Unknown |
 | [GeoJS](https://geojs.io/) | IP geolocation with ChatOps integration | No | Yes | Yes |