feat(icons): added tombstone icon (#4929)

* feat(icons): added tombstone icon

* Update icons/tombstone.json

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

* Update icons/tombstone.json

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

---------

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

icons/tombstone.json

@@ -0,0 +1,41 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "jguddas",
+    "ryck"
+  ],
+  "use-cases": [
+    "Marking death or game-over states in games, often paired with skull or ghost icons",
+    "Indicating cemetery or graveyard locations on maps",
+    "Marking deceased individuals in genealogy or family-tree applications",
+    "Flagging obsolete, deprecated, or retired items such as endpoints or pages"
+  ],
+  "tags": [
+    "grave",
+    "gravestone",
+    "headstone",
+    "cemetery",
+    "graveyard",
+    "death",
+    "memorial",
+    "funeral",
+    "halloween",
+    "rip",
+    "obituary",
+    "deceased",
+    "epitaph",
+    "mourning",
+    "bereavement",
+    "condolence",
+    "deprecated",
+    "retired",
+    "archived",
+    "decommissioned"
+  ],
+  "categories": [
+    "gaming",
+    "navigation",
+    "people",
+    "development"
+  ]
+}

icons/tombstone.svg

@@ -0,0 +1,16 @@
+<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="M11 10h2" />
+  <path d="M19 21V10a7 7 0 00-14 0v11" />
+  <path d="M2 21h20" />
+  <path d="M9 14h6" />
+</svg>