Move Icons in data. (#29087)

site/data/icons.yml

@@ -0,0 +1,25 @@
+preferred:
+  - name: Font Awesome
+    website: https://fontawesome.com/
+  - name: Feather
+    website: https://feathericons.com/
+  - name: Octicons
+    website: https://octicons.github.com/
+
+more:
+  - name: Bytesize
+    website: https://github.com/danklammer/bytesize-icons
+  - name: Google Material icons
+    website: https://material.io/tools/icons/
+  - name: Ionicons
+    website: https://ionicons.com/
+  - name: Dripicons
+    website: http://demo.amitjakhu.com/dripicons/
+  - name: Ikons
+    website: http://ikons.piotrkwiatkowski.co.uk/
+  - name: Glyph
+    website: https://glyph.smarticons.co/
+  - name: Icons8
+    website: https://icons8.com/
+  - name: icofont
+    website: https://icofont.com/