Add Contentful Images from Inactive PR (#1034)

Issue #2002 

resolve #1034

README.md

@@ -357,6 +357,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Changelogs.md](https://changelogs.md) | Structured changelog metadata from open source projects | No | Yes | Unknown |
 | [Ciprand](https://github.com/polarspetroll/ciprand) | Secure random string generator | No | Yes | No |
 | [Cloudflare Trace](https://github.com/fawazahmed0/cloudflare-trace-api) | Get IP Address, Timestamp, User Agent, Country Code, IATA, HTTP Version, TLS/SSL Version & More | No | Yes | Yes |
+| [Contentful Images](https://www.contentful.com/developers/docs/references/images-api/) | Used to retrieve and apply transformations to images | `apiKey` | Yes | Yes |
 | [CountAPI](https://countapi.xyz) | Free and simple counting service. You can use it to track page hits and specific events | No | Yes | Yes |
 | [DigitalOcean Status](https://status.digitalocean.com/api) | Status of all DigitalOcean services | No | Yes | Unknown |
 | [DomainDb Info](https://api.domainsdb.info/) | Domain name search to find all domains containing particular words/phrases/etc | No | Yes | Unknown |