Add missing arrow-*-from-square/optimise external-link icon/s (#1383)

* Add `arrow-up-right-from-square` (share) icon

* Add `arrow-up-left-from-square` icon

* Add `arrow-down-left-from-square` icon

* Add `arrow-down-right-from-square` icon

* Optimise `external-link` icon

* Improve `external-link` metadata

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

icons/arrow-down-left-from-square.json

@@ -0,0 +1,16 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley"
+  ],
+  "tags": [
+    "outwards",
+    "direction",
+    "south-west",
+    "diagonal"
+  ],
+  "categories": [
+    "arrows",
+    "navigation"
+  ]
+}

icons/arrow-down-left-from-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="M13 21h6a2 2 0 0 0 2-2V5a2 2 0 0 0-2-2H5a2 2 0 0 0-2 2v6" />
+  <path d="m3 21 9-9" />
+  <path d="M9 21H3v-6" />
+</svg>

icons/arrow-down-right-from-square.json

@@ -0,0 +1,16 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley"
+  ],
+  "tags": [
+    "outwards",
+    "direction",
+    "south-east",
+    "diagonal"
+  ],
+  "categories": [
+    "arrows",
+    "navigation"
+  ]
+}

icons/arrow-down-right-from-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="M21 11V5a2 2 0 0 0-2-2H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h6" />
+  <path d="m21 21-9-9" />
+  <path d="M21 15v6h-6" />
+</svg>

icons/arrow-up-left-from-square.json

@@ -0,0 +1,16 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley"
+  ],
+  "tags": [
+    "outwards",
+    "direction",
+    "north-west",
+    "diagonal"
+  ],
+  "categories": [
+    "arrows",
+    "navigation"
+  ]
+}

icons/arrow-up-left-from-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="M13 3h6a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-6" />
+  <path d="m3 3 9 9" />
+  <path d="M3 9V3h6" />
+</svg>

icons/arrow-up-right-from-square.json

@@ -0,0 +1,20 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley"
+  ],
+  "tags": [
+    "outwards",
+    "direction",
+    "north-east",
+    "diagonal",
+    "share",
+    "open",
+    "external"
+  ],
+  "categories": [
+    "arrows",
+    "navigation",
+    "social"
+  ]
+}

icons/arrow-up-right-from-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="M21 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h6" />
+  <path d="m21 3-9 9" />
+  <path d="M15 3h6v6" />
+</svg>

icons/external-link.json

@@ -6,10 +6,13 @@
     "ericfennis"
   ],
   "tags": [
-    "outbound"
+    "outbound",
+    "open",
+    "share"
   ],
   "categories": [
+    "arrows",
     "text",
-    "arrows"
+    "social"
   ]
 }

icons/external-link.svg

@@ -9,7 +9,7 @@
   stroke-linecap="round"
   stroke-linejoin="round"
 >
+  <path d="M15 3h6v6" />
+  <path d="M10 14 21 3" />
   <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6" />
-  <polyline points="15 3 21 3 21 9" />
-  <line x1="10" x2="21" y1="14" y2="3" />
 </svg>