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/testdata/cloudflare-workers-cel.yaml

@@ -1,8 +1,8 @@
 bots:
-- name: cloudflare-workers
-  expression: '"Cf-Worker" in headers'
-  action: DENY
+  - name: cloudflare-workers
+    expression: '"Cf-Worker" in headers'
+    action: DENY
 
 status_codes:
   CHALLENGE: 401
-  DENY: 403
+  DENY: 403

lib/testdata/cloudflare-workers-header.yaml

@@ -1,9 +1,9 @@
 bots:
-- name: cloudflare-workers
-  headers_regex:
-    CF-Worker: .*
-  action: DENY
+  - name: cloudflare-workers
+    headers_regex:
+      CF-Worker: .*
+    action: DENY
 
 status_codes:
   CHALLENGE: 401
-  DENY: 403
+  DENY: 403

lib/testdata/hack-test.json

@@ -2,8 +2,6 @@
   {
     "name": "ipv6-ula",
     "action": "ALLOW",
-    "remote_addresses": [
-      "fc00::/7"
-    ]
+    "remote_addresses": ["fc00::/7"]
   }
-]
+]

lib/testdata/hack-test.yaml

@@ -1,3 +1,3 @@
 - name: well-known
   path_regex: ^/.well-known/.*$
-  action: ALLOW
+  action: ALLOW

lib/testdata/rule_change.yaml

@@ -1,12 +1,12 @@
 bots:
-- name: old-rule
-  path_regex: ^/old$
-  action: CHALLENGE
+  - name: old-rule
+    path_regex: ^/old$
+    action: CHALLENGE
 
-- name: new-rule
-  path_regex: ^/new$
-  action: CHALLENGE
+  - name: new-rule
+    path_regex: ^/new$
+    action: CHALLENGE
 
 status_codes:
   CHALLENGE: 401
-  DENY: 403
+  DENY: 403