feat(icons): added letter-spacing icon (#3038)

* Added icons/letter-spacing.svg

* Added icons/letter-spacing.json

* Update icons/letter-spacing.json

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* Update letter-spacing.svg

* Update letter-spacing.json

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Karsa <contact@karsa.org>

icons/letter-spacing.json

@@ -0,0 +1,24 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "madebyoz"
+  ],
+  "use-cases": [
+    "Adjusting spacing between characters in text editors and design tools"
+  ],
+  "tags": [
+    "tracking",
+    "kerning",
+    "design",
+    "lettering",
+    "text",
+    "letters",
+    "characters",
+    "font",
+    "typography",
+    "formatting"
+  ],
+  "categories": [
+    "text"
+  ]
+}

icons/letter-spacing.svg

@@ -0,0 +1,16 @@
+<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="M15 14H9" />
+  <path d="M21 3v18" />
+  <path d="M3 3v18" />
+  <path d="m8 16 3.453-7.648a.6.6 0 011.094.001L16 16" />
+</svg>