Stargate-working-iris_better fit/easy open_color

1. Adjusted the sizes of the pins and holes for better fittment. the iris now opens and closes with ease.

2. lowered the height of the internal ring to use less material 

3. blocked two of the slots for handles that were out of alignment/unnecessary on the internal ring and the base plate.

4. redesigned the handles for opening the iris to use significantly less material and take up less space.

5. added color to the stargate face and the iris fins.  (I used orange on the chevrons because that was all i had. I kind of like how it looks, but wouldn't be hard to use red if you want to.)

-there are a couple of extra swivels and handles on the build plate that are disabled by default.  click the checkbox in the “objects” panel if you would like to print the extras.  Its pretty easy to drop and lose the small pieces.

-when assembling the iris fins. it doesn't matter where you put the first one. after the first, put them on going counter clockwise around the ring.  (best to put them on in the iris closed position. see pictures)

-after assembly, open and close the iris slowly the first few times. if any of the fins get tangled when opening, there might be a small bur on the backside of the fin. gently scrape it off with your fingernail. 

Only tested on p1s. should be compatible with x1 and a1. 

---when opening in Bambu studio.  If you get a message saying, “3mf file version is in Beta and it is newer the current Bambu studio version.” you should be able to click ok and ignore it.  I'm not using a beta version of the slicer so I'm not sure why that is popping up, but everything looks like it is loading properly.