Add TaskDisplayName and increment AttemptCount in DynamoDB

[dtinth]

This pull request introduces enhancements to the DynamoDB data schema and task status update logic in src/main.ts to improve debugging and task tracking capabilities.

• Adds the TaskDisplayName attribute to DynamoDB operations to include the task's display name in the database. This change aids in easier identification and debugging of tasks.
• Implements logic to increment the AttemptCount attribute in DynamoDB for each task attempt. This is achieved by modifying the updateTaskStatusInDynamoDB function to include an UpdateExpression that increments AttemptCount when a task's status is updated to "RUNNING". This enhancement allows for better tracking of task attempts.

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