feat(icons): added notebook-dot icon (#3228)

* Added icons/notebook-dot.svg

* Added icons/notebook-dot.json

* Update notebook-dot.svg

* Apply suggestion from @github-actions[bot]

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* Add use-cases field to notebook-dot.json

* Apply batched suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

icons/notebook-dot.json

@@ -0,0 +1,26 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "elenakovelskikh"
+  ],
+  "use-cases": [
+    "Indicating newly updated shared notes in team workspaces",
+    "Marking shared documentation with new information"
+  ],
+  "tags": [
+    "document",
+    "file",
+    "journal",
+    "page",
+    "paper",
+    "record",
+    "entry",
+    "notebook",
+    "notification",
+    "unread",
+    "note"
+  ],
+  "categories": [
+    "communication"
+  ]
+}

icons/notebook-dot.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="M16 11.75V22" />
+  <path d="M2 10h4" />
+  <path d="M2 14h4" />
+  <path d="M2 18h4" />
+  <path d="M2 6h4" />
+  <path d="M20 11.75V20a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h5.65" />
+  <circle cx="18" cy="5" r="3" />
+</svg>