Prefix names with CT and add icon enum.

Closes #3479202

components/01-atoms/button/button.component.yml

 '$schema': 'https://git.drupalcode.org/project/drupal/-/raw/HEAD/core/assets/schemas/v1/metadata.schema.json'
 
-name: Button
+name: CT Button
 
 status: obsolete
 
@@ -65,8 +65,60 @@ props:
       type: string
       title: Icon
       description: Icon name.
+      enum:
+        - account
+        - approve
+        - bars
+        - bullet
+        - call
+        - cancel
+        - checked
+        - calendar-1
+        - calendar-2
+        - close
+        - close-outline
+        - down-arrow-1
+        - down-arrow-2
+        - down-arrow-large
+        - download
+        - download-file
+        - exclamation-mark-1
+        - exclamation-mark-2
+        - exclamation-mark-3
+        - eye
+        - facebook
+        - help
+        - image
+        - information-mark
+        - instagram
+        - left-arrow
+        - left-arrow-outline
+        - linkedin
+        - magnifier
+        - map
+        - megaphone
+        - message
+        - mortarboard
+        - newspaper
+        - pdf-file
+        - progress
+        - right-arrow-1
+        - right-arrow-2
+        - select-box
+        - share
+        - square
+        - to-do
+        - twitter
+        - up-arrow
+        - up-arrow-large
+        - upper-arrow
+        - upper-right-arrow
+        - watch
+        - word-file
+        - x
+        - youtube
       examples:
-        - 'person'
+        - 'magnifier'
 
     icon_placement:
       type: string