feat(ecosystem): Implement cross-system issue synchronization

[adamsaimi]

Test 7

[adamsaimi]

[Best Practice] Mutable Default Value in Dataclass

• Problem: The default value for queued is timezone.now(), which is evaluated once at module load, causing all instances to share the same timestamp.
• Fix: Use field(default_factory=timezone.now) to ensure a unique timestamp for each instance.

[adamsaimi]

[Bug] Incorrect Type for queued Field After Deserialization

• Problem: JSON serialization converts datetime objects to strings, causing the queued field to be a str instead of a datetime in from_dict, leading to potential AttributeError or TypeError.
• Fix: Manually parse the queued string back into a datetime object within the from_dict method.

[adamsaimi]

🔥 Summary done with Reviewate 🎯

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📋 Description

• Introduces an AssignmentSource dataclass to track the origin of assignment changes.
• Modifies IssueBasicIntegration and IssueSyncIntegration to accept the AssignmentSource.
• Updates the should_sync method to prevent infinite sync loops by checking the assignment source.
• Adjusts the sync_assignee_outbound task and utility functions to pass and utilize AssignmentSource information.

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🎯 Impact

• Enables cross-system synchronization of issue assignments and statuses.
• Prevents infinite sync loops between Sentry systems.
• Provides an audit trail for assignment changes, improving integration robustness.

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