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>

.github/workflows/zizmor.yml

@@ -1,12 +1,12 @@
 name: zizmor
 
 on:
-    push:
-      paths:
-        - '.github/workflows/*.ya?ml'
-    pull_request:
-      paths:
-        - '.github/workflows/*.ya?ml'
+  push:
+    paths:
+      - ".github/workflows/*.ya?ml"
+  pull_request:
+    paths:
+      - ".github/workflows/*.ya?ml"
 
 jobs:
   zizmor:
@@ -24,9 +24,9 @@ jobs:
         uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b # v7.2.0
 
       - name: Run zizmor 🌈
-        run: uvx zizmor --format sarif . > results.sarif 
+        run: uvx zizmor --format sarif . > results.sarif
         env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} 
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Upload SARIF file
         uses: github/codeql-action/upload-sarif@5d4e8d1aca955e8d8589aabd499c5cae939e33c7 # v4.31.9