chore: set up commitlint, husky, and prettier (#1451)

* chore: add prettier configuration

Signed-off-by: Xe Iaso <me@xeiaso.net>

* format: run prettier tree-wide

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore(prettier): ignore intentionally ungrammatical files

Signed-off-by: Xe Iaso <me@xeiaso.net>

* ci: add PR title lint rule

Signed-off-by: Xe Iaso <me@xeiaso.net>

* ci: add DCO check

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore: add commitlint and husky

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore: add CONTRIBUTING guidelines

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore: set SKIP_INTEGRATION in precommit tests

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore: update spelling

Signed-off-by: Xe Iaso <me@xeiaso.net>

* ci(dco): remove reopened trigger

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore: remove dead file

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore(prettier): don't format nginx includes

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Xe Iaso <me@xeiaso.net>

lib/localization/locales/zh-TW.json

@@ -63,4 +63,4 @@
   "js_calculation_error_msg": "計算挑戰失敗：",
   "missing_required_forwarded_headers": "缺少必要的 X-Forwarded-* 標頭",
   "simplified_explanation": "這是一種類似於驗證碼的措施，用於防止機器人和惡意請求。但是，您無需自己動手，您的瀏覽器會收到一個計算任務，必須解決該任務以確保它是有效的客戶端。這個概念稱為<a href=\"https://en.wikipedia.org/wiki/Proof_of_work\">工作量證明</a>。該任務在幾秒鐘內計算完畢，您將被授予訪問網站的權限。感謝您的理解和耐心。"
-}
+}