feat(recurring-tasks): enhance recurring task functionality and documentation

- Expanded schedule options for recurring tasks, including new intervals for every X days, weeks, and months.
- Added future task creation logic to ensure tasks are created within defined limits based on their schedule type.
- Updated user guide to reflect new scheduling options and future task creation details.
- Improved backend logic for recurring task creation, including batch processing and future limit calculations.
- Added environment configuration for enabling recurring jobs.
- Enhanced frontend localization for recurring task configuration labels.

worklenz-backend/.env.template

@@ -78,4 +78,8 @@ GOOGLE_CAPTCHA_SECRET_KEY=your_captcha_secret_key
 GOOGLE_CAPTCHA_PASS_SCORE=0.8
 
 # Email Cronjobs
-ENABLE_EMAIL_CRONJOBS=true
+ENABLE_EMAIL_CRONJOBS=true
+
+# RECURRING_JOBS
+ENABLE_RECURRING_JOBS=true
+RECURRING_JOBS_INTERVAL="0 11 */1 * 1-5"