Add sendEmail workflow with immediate processing option

- Create sendEmailWorkflow as a Payload workflow alternative to task
- Add processImmediately option (disabled by default) to send emails immediately
- Expose processEmailItem method in MailingService for individual email processing
- Add comprehensive input schema with conditional fields
- Update plugin to register both tasks and workflows
- Add detailed documentation comparing tasks vs workflows
- Includes status tracking and error handling
- Bump version to 0.3.0 (new feature)

src/plugin.ts

@@ -4,6 +4,7 @@ import { MailingService } from './services/MailingService.js'
 import { createEmailTemplatesCollection } from './collections/EmailTemplates.js'
 import Emails from './collections/Emails.js'
 import { mailingJobs, scheduleEmailsJob } from './jobs/index.js'
+import { mailingWorkflows } from './workflows/index.js'
 
 
 export const mailingPlugin = (pluginConfig: MailingPluginConfig) => (config: Config): Config => {
@@ -86,6 +87,10 @@ export const mailingPlugin = (pluginConfig: MailingPluginConfig) => (config: Con
         ...(config.jobs?.tasks || []),
         ...mailingJobs,
       ],
+      workflows: [
+        ...(config.jobs?.workflows || []),
+        ...mailingWorkflows,
+      ],
     },
     onInit: async (payload: any) => {
       if (pluginConfig.initOrder === 'after' && config.onInit) {