* Refactor notifications and add helper functions
* Add helper functions to simplify sourcing files and executing functions if they exist
* Create notify_v2.sh wrapper script
* Simplify and consolidate notification logic within notify_v2.sh
* Support notification management via environment variables
* Move secrets to dockcheck.config
* Fix NOTIFY_CHANNELS default value when not set
* Feedback changes
* Remove leading spaces from MessageBody
* Check for valid notify v2 variables
* Warn on missing configuration and bypass notifications
* Update readme
* Additional feedback fixes
* More comments in default.config with different # depth for comments and settings
* Rename NOTIFY_TOPIC_NAME variable to NTFY_TOPIC_NAME for consistency
* Add TELEGRAM_TOPIC_ID
* Fix AppriseURL variable
* Add an ending newline to all MessageBody statements for consistency
* Remove troubleshooting echo statement
* Prevent attempting to trigger notifications for notification templates if versions are the same
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Co-authored-by: Matthew Oleksowicz <matt@everyoneneeds.it>
