Blinds with 3rd position hex command
Hi, first thanks for this great plugin, it is very useful. I would like to help in creating a new Blind accessory type for this plugin that has 4 options/buttons: Goto Open position, Goto Close position, Stop, Goto 3rd position. (4 different hex codes). I'm ok in python and never done javascript before, but I'm willing to learn in the way.  The Goto open Button will set the blind to open, and with this kind of motor that I have (Dooya DM25LEQ) it stops automatically when arriving at the configured open position same thing for close and 3rd position. You can configure 3 positions on the motor: Open, Close and 3rd position ( anything in between). 

So it seems not too complicated for a project for me if I can base my work on the existing blind accessory that has open, close, stop function, but to make it more work like 4 momentary switches embedded in one accessory ( like my remote). 4 buttons, 4 hex codes, all in the same accessory. If on top of that we can still keep the animation of the blinds it will be perfect. (with still a parameter of open delay and close delay, with a % equaling the middle 3rd position)

For now i'm using the existing plugin with 4 different switches for each blind. Would be much cleaner if I could regroup in one accessory.

I will begin reading the files for switch and blinds to see if I can make that happen even without javascript experience..... If you have any advice on where to begin, and on the documentation I could use please tell me.

