Add CASAIA CSAC451-WTC-E

[Albenss]

Add the CASAIA CSAC451-WTC-E device, device which allows you to control, among other things, gate or garage door motors.

Description : Dry contact relay switch module in 6-24v AC
Test : https://blog.domadoo.fr/90869-casa-ia-csac-451-ac-controle-dacces-zigbee/
Seller : https://shop.smarthome-europe.com/fr/peripheriques/4808-casaia-module-de-controle-d-acces-zigbee-6-24v-dc-contact-sec-et-temporise-a-2-secondes-3770021021120.html

[Koenkk]

Thanks!

Could you also submit a picture for the docs? This can be done by:

1. Create a fork by clicking here
2. Go to the public/images/devices directory, Add file -> Upload files
3. Upload the files and press Commit changes
4. Press Contribute -> Open pull request -> update title/description -> Create pull request

Make sure that:

• The filename is CSAC451-WTC-E.png
• The size is 512x512
• The background is transparent (use e.g. Adobe remove background)

[Albenss]

Hello, done : Koenkk/zigbee2mqtt.io#3041