feat: Add commitizen to project

Signed-off-by: Lucien Cartier-Tilet <lucien@phundrak.com>

package.json

@@ -8,6 +8,7 @@
   "license": "AGPL-3.0",
   "private": true,
   "devDependencies": {
+    "cz-conventional-changelog": "^3.3.0",
     "vuepress": "^2.0.0-beta.60"
   },
   "scripts": {
@@ -16,5 +17,10 @@
   },
   "dependencies": {
     "vuepress-plugin-remove-html-extension": "^0.1.0"
+  },
+  "config": {
+    "commitizen": {
+      "path": "./node_modules/cz-conventional-changelog"
+    }
   }
 }