Alloy 100/allow custom destinations

General MR

Summary

• Allows users to add their own Alloy destinations; in-cases where a destination is external of Big Bang (Such as the P1 SIEM)
  • Configures the destinations and podLogs destinations appropriately when .Values.alloy.additionalDestinations is configured
• Modifies the NOTES.txt with additional context, and potential resolutions.

Relevant logs/screenshots

Linked Issue

Closes issue

Upgrade Notices

N/A