Add CRUD methods to DynamoDBHook

[gocoolp]

Add get_item, put_item, update_item, delete_item, and query methods to DynamoDBHook using the boto3 resource API (plain Python types, no typed {"S": "value"} format). Closes #69050.

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[boring-cyborg]

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[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.