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/plugin/config-types.ts

@@ -1,17 +1,21 @@
-import type {CollectionConfig, TaskConfig} from "payload"
+import type {CollectionConfig, GlobalConfig, TaskConfig} from "payload"
 
 import type {Trigger} from "../triggers/types.js"
 
 export type TriggerConfig = (config: WorkflowsPluginConfig) => Trigger
 
-export type WorkflowsPluginConfig<TSlug extends string = string> = {
+export type WorkflowsPluginConfig<TSlug extends string = string, TGlobal extends string = string> = {
   collectionTriggers?: {
     [key in TSlug]?: {
       [key in keyof CollectionConfig['hooks']]?: true
     } | true
   }
+  globalTriggers?: {
+    [key in TGlobal]?: {
+      [key in keyof GlobalConfig['hooks']]?: true
+    } | true
+  }
   enabled?: boolean
   steps: TaskConfig<string>[]
   triggers?: TriggerConfig[]
-  webhookPrefix?: string
 }