Optimiseat-sign icon (#1213)

* Optimise `at-sign` icon

* Refine `at-sign` icon

* Restore `at-sign` ascender

icons/at-sign.svg

@@ -10,5 +10,5 @@
   stroke-linejoin="round"
 >
   <circle cx="12" cy="12" r="4" />
-  <path d="M16 8v5a3 3 0 0 0 6 0v-1a10 10 0 1 0-3.92 7.94" />
+  <path d="M16 8v5a3 3 0 0 0 6 0v-1a10 10 0 1 0-4 8" />
 </svg>

icons/leafy-green.json

@@ -0,0 +1,15 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "salad",
+    "lettuce",
+    "vegetable",
+    "chard",
+    "cabbage",
+    "bok choy"
+  ],
+  "categories": [
+    "food-beverage",
+    "emoji"
+  ]
+}

icons/leafy-green.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="M2 22c1.25-.987 2.27-1.975 3.9-2.2a5.56 5.56 0 0 1 3.8 1.5 4 4 0 0 0 6.187-2.353 3.5 3.5 0 0 0 3.69-5.116A3.5 3.5 0 0 0 20.95 8 3.5 3.5 0 1 0 16 3.05a3.5 3.5 0 0 0-5.831 1.373 3.5 3.5 0 0 0-5.116 3.69 4 4 0 0 0-2.348 6.155C3.499 15.42 4.409 16.712 4.2 18.1 3.926 19.743 3.014 20.732 2 22" />
+  <path d="M2 22 17 7" />
+</svg>

icons/salad.json

@@ -12,6 +12,7 @@
     "health"
   ],
   "categories": [
-    "food-beverage"
+    "food-beverage",
+    "emoji"
   ]
 }