🔧 Chore: add changelog template and workflow

package.json

@@ -24,6 +24,10 @@
     "server:production": "npm run server -- -e production",
     "server:docs": "hugo server --source=../fixit-docs -D --disableFastRender --navigateToChanged --ignoreCache --bind 0.0.0.0",
     "version": "sed -i '' \"s/v$npm_package_version-RC/v$npm_package_version/g\" layouts/partials/init/index.html && git add .",
-    "postversion": "git push && git push --tags"
+    "postversion": "git push && git push --tags",
+    "release": "auto-changelog --template changelog-template.hbs"
+  },
+  "devDependencies": {
+    "auto-changelog": "^2.4.0"
   }
 }