enhance the CreateFileFormat command

[chaami]

Adds support for if not exists options and for file format comment.

Fixes SNOW-589962

• I am adding a new automated test(s) to verify correctness of my new code
• I am adding new logging messages
• I am adding new credentials
• I am adding a new dependency

The change keeps the (relatively poor) CreateFileFormat constructor parameter naming for compatibility's sake and add additional ones to complete the feature.
Internal attributes are named closed to the Snowflake language names.

[github-actions]

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[chaami]

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[chaami]

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