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/challenge/preact/js/xeact.js

@@ -5,7 +5,9 @@
  */
 const h = (name, data = {}, children = []) => {
   const result =
-    typeof name == "function" ? name(data) : Object.assign(document.createElement(name), data);
+    typeof name == "function"
+      ? name(data)
+      : Object.assign(document.createElement(name), data);
   if (!Array.isArray(children)) {
     children = [children];
   }
@@ -118,10 +120,10 @@ const d = (ms) => {
 /**
  * Parse the contents of a given HTML page element as JSON and
  * return the results.
- * 
+ *
  * This is useful when using templ to pass complicated data from
  * the server to the client via HTML[1].
- * 
+ *
  * [1]: https://templ.guide/syntax-and-usage/script-templates/#pass-server-side-data-to-the-client-in-a-html-attribute
  */
 const j = (id) => JSON.parse(g(id).textContent);