feat(hook): add AllowInsecure option for TLS verification

* Introduced AllowInsecure field in Hook configuration to skip TLS certificate verification.
* Updated database schema and models to support the new field.
* Modified HTTP client behavior based on AllowInsecure setting.

sql/schema.dbml

@@ -47,6 +47,7 @@ Table hooks {
   headers text [note: 'JSON encoded headers']
   events text [note: 'JSON array of event types']
   active boolean [not null, default: true]
+  allow_insecure boolean [not null, default: false, note: 'Skip TLS certificate verification']
   description text
   secret varchar(255) [note: 'HMAC signature secret']
   retry_count int [not null, default: 3]