fix(icons): add table-of-contents icon (#2348)

* fix(icons): add table-of-contents icon

* fix(icons): add ToC to custom words list

* fix(icons): fix formatting

.cspell/custom-words.txt

@@ -9,6 +9,7 @@ strikethrough
 touchpad
 ungroup
 pilcrow
+toc
 
 # Brands
 codepen

icons/table-of-contents.json

@@ -0,0 +1,24 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "karsa-mistmere"
+  ],
+  "tags": [
+    "toc",
+    "outline",
+    "navigation",
+    "document structure",
+    "index",
+    "overview",
+    "sections",
+    "chapters",
+    "content",
+    "documentation",
+    "manual",
+    "knowledge base",
+    "faq"
+  ],
+  "categories": [
+    "text"
+  ]
+}

icons/table-of-contents.svg

@@ -0,0 +1,18 @@
+<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="M16 12H3" />
+  <path d="M16 18H3" />
+  <path d="M16 6H3" />
+  <path d="M21 12h.01" />
+  <path d="M21 18h.01" />
+  <path d="M21 6h.01" />
+</svg>