feat(icons): added shelving-unit icon (#3041)

* [github] Added issue template forms

* [github] yaml => yml

* Syntax fixes

* Further syntax fixes

* Sort issue templates

* Update 02_bug_report.yml

* Added icons/shelf.svg

* Added icons/shelf.json

* Update shelf.json

* Update shelf.json

* Update and rename shelf.json to shelving-unit.json

* Rename shelf.svg to shelving-unit.svg

---------

Co-authored-by: Karsa <karsa@karsa.org>

icons/shelving-unit.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "karsa-mistmere"
+  ],
+  "tags": [
+    "ledge",
+    "rack",
+    "storage",
+    "inventory",
+    "furniture",
+    "sill",
+    "shelves",
+    "shelf",
+    "organize",
+    "display",
+    "store",
+    "arrange",
+    "unit",
+    "cabinet",
+    "fixture",
+    "retail",
+    "warehouse"
+  ],
+  "categories": [
+    "home"
+  ]
+}

icons/shelving-unit.svg

@@ -0,0 +1,19 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M12 12V9a1 1 0 0 0-1-1H9a1 1 0 0 0-1 1v3" />
+  <path d="M16 20v-3a1 1 0 0 0-1-1h-2a1 1 0 0 0-1 1v3" />
+  <path d="M20 22V2" />
+  <path d="M4 12h16" />
+  <path d="M4 20h16" />
+  <path d="M4 2v20" />
+  <path d="M4 4h16" />
+</svg>