feat(icons): add messages-circle icon (#4754)

* feat: add messages-circle icon

* chore: apply bot metadata suggestions

* fix: update messages-circle to compliant design and add contributors

* Revise use cases for messaging icon

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

---------

Co-authored-by: Mirazstudio-offical <miraza@example.com>
Co-authored-by: Eric Fennis <eric.fennis@gmail.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

icons/messages-circle.json

@@ -0,0 +1,40 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "colebemis",
+    "csandman",
+    "ericfennis",
+    "jguddas",
+    "karsa-mistmere",
+    "Mirazstudio-offical"
+  ],
+  "use-cases": [
+    "Starting a group conversation in chat apps",
+    "Indicating multiple unread message threads",
+    "Opening discussions or comment sections in social apps"
+  ],
+  "tags": [
+    "comment",
+    "chat",
+    "conversation",
+    "dialog",
+    "feedback",
+    "speech bubbles",
+    "copy",
+    "multiple",
+    "discussion",
+    "interview",
+    "debate",
+    "group",
+    "groupchat",
+    "threads",
+    "unread",
+    "bubble",
+    "messaging"
+  ],
+  "categories": [
+    "social",
+    "communication",
+    "notifications"
+  ]
+}

icons/messages-circle.svg

@@ -0,0 +1,14 @@
+<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="M19.95 10.05a7 7 0 011.412 7.872 1 1 0 00-.058.787l.675 2.089a1 1 0 01-1.236 1.168l-2.155-.631a1 1 0 00-.745.06 7 7 0 01-7.793-1.445" />
+  <path d="M2.696 12.708a1 1 0 00-.058-.785 7 7 0 113.518 3.473 1 1 0 00-.744-.061l-2.155.63a1 1 0 01-1.236-1.167z" />
+</svg>