Add story icon (#1820)

* Add story icon

* Split single path into multiple elements

* Refine icons/story.svg

Co-authored-by: Jakob Guddas <github@jguddas.de>

* Update contributors to icons/story.json

Co-authored-by: Jakob Guddas <github@jguddas.de>

* Change "story" icon name to "circle-fading-plus" and add to shapes category

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>
Co-authored-by: Jakob Guddas <github@jguddas.de>

icons/circle-fading-plus.json

@@ -0,0 +1,22 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "jordan808",
+    "jguddas"
+  ],
+  "tags": [
+    "stories",
+    "social media",
+    "instagram",
+    "facebook",
+    "meta",
+    "snapchat",
+    "sharing",
+    "content"
+  ],
+  "categories": [
+    "communication",
+    "social",
+    "shapes"
+  ]
+}