feat(logging): add aws account id, region and log group as available dynamic partition keys

[mrchops1024]

This feature allows using additional partition keys in the dynamic partitioning process for central logging. Using this, it would be possible to setup the log-filters.json file for the dynamic-partitioning lambda function as follows:

[
    { "logGroupPattern": "*", "s3Prefix": "{{AWS::AccountId}}/{{AWS::Region}}/{{AWS::LogGroup}}" }
]

This will log all log groups to the central logging S3 bucket, with new partitioning keys starting like so:
111111111111/us-west-2/my-log-group/2024/09/04/etc...

This additionally allows configuring more fine-grained lifecycle rules on specific accounts and/or log groups if necessary.

Issue #, if available: N/A

Description of changes: Added 3 optional dynamic partition keys that can be configured in the log-filters.json dynamic partitioning file:

• {{AWS::AccountId}} - Will be replaced by the account id in which the log event came from
• {{AWS::Region}} - Will be replaced by the region in which the log event came from
• {{AWS::LogGroup}} - Will be replaced by the log group name of the log event

This change is backwards compatible as the omission of these variables causes no replacement to occur.

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