Auto merge of #2090 - vadixidav:patch-1, r=jtgeibel

Add computer-vision slug

Right now the closest thing in the list to computer vision is `science::robotics`. Computer vision algorithms are not always used for robotics. This slug also allows computer vision crates to be found easier instead of being lost among the other robotics crates.

Author: bors

src/boot/categories.toml

@@ -80,6 +80,12 @@ description = """
 Algorithms for making data smaller.\
 """
 
+[computer-vision]
+name = "Computer vision"
+description = """
+Crates for comprehending the world from video or images.\
+"""
+
 [config]
 name = "Configuration"
 description = """