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-audio.go

@@ -98,12 +98,7 @@ func relayAudioHelper(c *gin.Context, relayMode int) *OpenAIErrorWithStatusCode
 	fullRequestURL := getFullRequestURL(baseURL, requestURL, channelType)
 	if relayMode == RelayModeAudioTranscription && channelType == common.ChannelTypeAzure {
 		// https://learn.microsoft.com/en-us/azure/ai-services/openai/whisper-quickstart?tabs=command-line#rest-api
-		query := c.Request.URL.Query()
-		apiVersion := query.Get("api-version")
-		if apiVersion == "" {
-			apiVersion = c.GetString("api_version")
-		}
-		baseURL = c.GetString("base_url")
+		apiVersion := GetAPIVersion(c)
 		fullRequestURL = fmt.Sprintf("%s/openai/deployments/%s/audio/transcriptions?api-version=%s", baseURL, audioModel, apiVersion)
 	}