feat: support dalle for Azure (#754)

* feat: Add Message-ID to email headers to comply with RFC 5322

- Extract domain from SMTPFrom
- Generate a unique Message-ID
- Add Message-ID to email headers

* chore: check slice length

* feat: Add Azure compatibility for relayImageHelper

- Handle Azure channel requestURL compatibility
- Set api-key header for Azure channel authentication
- Handle Azure channel request body

fixes: https://github.com/songquanpeng/one-api/issues/751

* refactor: update implementation

---------

Co-authored-by: JustSong <songquanpeng@foxmail.com>

controller/relay-utils.go

@@ -191,7 +191,6 @@ func getFullRequestURL(baseURL string, requestURL string, channelType int) strin
 			fullRequestURL = fmt.Sprintf("%s%s", baseURL, strings.TrimPrefix(requestURL, "/openai/deployments"))
 		}
 	}
-
 	return fullRequestURL
 }
 
@@ -216,3 +215,12 @@ func postConsumeQuota(ctx context.Context, tokenId int, quotaDelta int, totalQuo
 		common.LogError(ctx, fmt.Sprintf("totalQuota consumed is %d, something is wrong", totalQuota))
 	}
 }
+
+func GetAPIVersion(c *gin.Context) string {
+	query := c.Request.URL.Query()
+	apiVersion := query.Get("api-version")
+	if apiVersion == "" {
+		apiVersion = c.GetString("api_version")
+	}
+	return apiVersion
+}