feat: create package for font icon

packages/apps-font-icons/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "@growi/apps-font-icons",
+  "version": "7.0.0-RC.0",
+  "license": "MIT",
+  "scripts": {
+    "font": "svgtofont --sources ./svg --output ./font"
+  },
+  "dependencies": {
+    "svgtofont": "^4.1.0"
+  }
+}