Add Notification Retry Queue

[grantfox-oss]

Description

Implement a retry queue for failed notification deliveries to improve reliability during temporary network failures.

Tasks
Create a retry queue for failed notifications.
Configure exponential backoff for retries.
Stop retrying after the maximum retry limit.
Log retry attempts and outcomes.

Acceptance Criteria
Failed notifications are automatically retried.
Retry intervals increase progressively.
Notifications exceeding the retry limit are marked as failed.
Retry events are logged.

[Mrwicks00]

Assign this issue to me, I will be happy to work on it

[grantfox-oss]

🦊 GrantFox — @Mrwicks00 has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #25)
2. Your PR will be reviewed by the Core-Foundry maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@Mrwicks00's PR #54 was approved and merged by @Abd-Standard.

🏆 @Mrwicks00: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (118 total points). Track your full progress on GrantFox.

👏 Great work, @Mrwicks00! Keep contributing to Core-Foundry.