feat(icons): add halifax (#1418)

Co-authored-by: Dashboard Icons Manager <193821040+dashboard-icons-manager[bot]@users.noreply.github.com>

tree.json

@@ -762,6 +762,7 @@
         "habitica-dark.png",
         "habitica.png",
         "hacker-news.png",
+        "halifax.png",
         "hammond-light.png",
         "hammond.png",
         "handbrake.png",
@@ -2879,6 +2880,7 @@
         "habitica-dark.svg",
         "habitica.svg",
         "hacker-news.svg",
+        "halifax.svg",
         "hammond-light.svg",
         "hammond.svg",
         "handbrake.svg",
@@ -4855,6 +4857,7 @@
         "habitica-dark.webp",
         "habitica.webp",
         "hacker-news.webp",
+        "halifax.webp",
         "hammond-light.webp",
         "hammond.webp",
         "handbrake.webp",