add logs backup, db backup check, ensure adding validator temp key

[yungwine]

No description provided.

[Copilot]

Pull Request Overview

This PR adds three new functions to improve system resilience and maintenance: logs backup functionality, database integrity checks with automatic recovery, and ensures validator temporary keys are properly added during election entry.

• Added automated backup system for mytoncore logs with rotation
• Implemented database health checks with automatic backup creation and recovery
• Enhanced validator key management by ensuring temporary keys are added during elections

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
mytoncore/mytoncore.py	Adds import for b642hex utility and ensures AddKeyToTemp is called during ElectionEntry
mytoncore/functions.py	Implements log backup, database check functions, and schedules them as periodic tasks

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[Copilot]

The import from mytoncore import b642hex creates a circular import since this code is already inside the mytoncore module. This should be imported from the specific module where b642hex is defined, such as from mytoncore.utils import b642hex.

Suggested change

	from mytoncore import b642hex
	from mytoncore.utils import xhex2hex, ng2g
	from mytoncore.utils import b642hex, xhex2hex, ng2g