I was able to add BlitzWolf® BW-RC1 IR blaster to ST finally. Pretty cheap way to make my "air conditioner “smart(er)” . Thanks for all the advices on the chain.
Weird thing is I added the IR blaster to smart life and added the air conditioner in there, but it wouldn’t pop up to ST. Then just for trying I tried to add a tuya device and after that it suddenly popped up in ST as a switch and the name was straight away “Air Conditioner”. Seems to work great. Still needed to add a virtual switch and sync that with the “air conditioner” switch so I can add it to webcore. All the scenes I made in Smart life came too to ST, but are offline, but don’t need em right now.