add

Author: SevenEarth

.changelog/3244.txt

@@ -0,0 +1,19 @@
+```release-note:new-data-source
+tencentcloud_mqtt_apply_registration_code
+```
+
+```release-note:new-resource
+tencentcloud_mqtt_user
+```
+
+```release-note:new-resource
+tencentcloud_mqtt_jwt_authenticator
+```
+
+```release-note:new-resource
+tencentcloud_mqtt_jwks_authenticator
+```
+
+```release-note:new-resource
+tencentcloud_mqtt_http_authenticator
+```