Remove unused plugin modules and their associated tests

- Delete `init-global-hooks.ts`, `init-step-tasks.ts`, `init-webhook.ts`, and `init-workflow-hooks.ts`
- Remove obsolete components: `TriggerWorkflowButton` and `WorkflowExecutionStatus`
- Clean up unused trigger files: `webhook-trigger.ts`
- Delete webhook-related integration tests: `webhook-triggers.spec.ts`
- Streamline related documentation and improve maintainability by eliminating deprecated code

src/triggers/index.ts

@@ -1,3 +1,2 @@
-export { collectionHookTrigger } from './collection-hook-trigger.js'
+export { collectionTrigger } from './collection-trigger.js'
 export { globalTrigger } from './global-trigger.js'
-export { webhookTrigger } from './webhook-trigger.js'