feat(icons): added mail-badge icon (#4638)

* feat(icons): added `mail-badge` icon

* feat(icons): apply suggested tags/categories/use-cases for mail-badge

* Updated icons/mail-badge.json

* Updated icons/mail-badge.json

icons/mail-badge.json

@@ -0,0 +1,37 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "rrod497",
+    "colebemis",
+    "karsa-mistmere",
+    "ericfennis",
+    "jguddas",
+    "danielbayley"
+  ],
+  "use-cases": [
+    "indicating certified or registered email",
+    "marking messages with proof of delivery",
+    "marking a message as signed or sealed",
+    "labeling official or legal correspondence"
+  ],
+  "tags": [
+    "email",
+    "message",
+    "letter",
+    "certified",
+    "registered",
+    "seal",
+    "stamp",
+    "verified",
+    "envelope",
+    "rosette",
+    "signed",
+    "official",
+    "delivery"
+  ],
+  "categories": [
+    "mail",
+    "communication",
+    "security"
+  ]
+}

icons/mail-badge.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="M22 7.7V6a2 2 0 0 0-2-2H4a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h8.25" />
+  <path d="M12 12.996a1.94 1.94 0 0 1-1.03-.296L2 7" />
+  <path d="m20.69 16.479 1.29 4.88a.5.5 0 0 1-.698.591l-1.843-.849a1 1 0 0 0-.879.001l-1.846.85a.5.5 0 0 1-.692-.593l1.29-4.88" />
+  <circle cx="19" cy="14" r="3" />
+</svg>