feat(icons): add letter-text icon (#2252)

* feat(icons): add drop-cap icon

Co-authored-by: Jakob Guddas <github@jguddas.de>

* fix(icons): round the top of the `drop-cap` icon

Co-authored-by: Jakob Guddas <github@jguddas.de>

* fix(icons): Fix `drop-cap` icon

* fix(icons): rename `drop-cap` icon to `letter-text`

---------

Co-authored-by: Jakob Guddas <github@jguddas.de>
Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

icons/letter-text.json

@@ -0,0 +1,18 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "jguddas",
+    "GRA0007"
+  ],
+  "tags": [
+    "drop cap",
+    "text",
+    "format",
+    "typography",
+    "letter",
+    "font size"
+  ],
+  "categories": [
+    "text"
+  ]
+}

icons/letter-text.svg

@@ -0,0 +1,17 @@
+<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 12h6" />
+  <path d="M15 6h6" />
+  <path d="m3 13 3.553-7.724a.5.5 0 0 1 .894 0L11 13" />
+  <path d="M3 18h18" />
+  <path d="M4 11h6" />
+</svg>