Add key variants (#1257)

* Add `key` alternate icon

* Update icons/key-2.svg

Co-authored-by: Karsa <contact@karsa.org>

* Refine `key` alternate icon

* Add `key` variant

* Refine `key` alternate icons

* Rename `key-2` to `key-round`

* Rename `key-3` to `key-square`

* Improve metadata

---------

Co-authored-by: Karsa <contact@karsa.org>

icons/key-round.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "password",
+    "login",
+    "authentication",
+    "secure",
+    "unlock"
+  ],
+  "categories": [
+    "security",
+    "account"
+  ]
+}

icons/key-round.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 18v3c0 .6.4 1 1 1h4v-3h3v-3h2l1.4-1.4a6.5 6.5 0 1 0-4-4Z" />
+  <circle cx="16.5" cy="7.5" r=".5" />
+</svg>

icons/key-square.json

@@ -0,0 +1,15 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "password",
+    "login",
+    "authentication",
+    "secure",
+    "unlock",
+    "car key"
+  ],
+  "categories": [
+    "security",
+    "account"
+  ]
+}

icons/key-square.svg

@@ -0,0 +1,15 @@
+<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="M12.4 2.7c.9-.9 2.5-.9 3.4 0l5.5 5.5c.9.9.9 2.5 0 3.4l-3.7 3.7c-.9.9-2.5.9-3.4 0L8.7 9.8c-.9-.9-.9-2.5 0-3.4Z" />
+  <path d="m14 7 3 3" />
+  <path d="M9.4 10.6 2 18v3c0 .6.4 1 1 1h4v-3h3v-3h2l1.4-1.4" />
+</svg>

icons/key.json

@@ -11,7 +11,11 @@
     "password",
     "login",
     "authentication",
-    "secure"
+    "secure",
+    "unlock",
+    "keychain",
+    "key ring",
+    "fob"
   ],
   "categories": [
     "security",