Add to repo README: summary of the S3 bucket with links to key directories/parts

[scottveirs]

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[scottveirs]

• Raw data set
• Pre-processed data?
• Annotations
• Model(s), maybe with a versioning scheme
• short README in the bucket? (Point back to repo README, request & specify essential attribution)

[scottveirs]

@tsuize Can you add a verbal summary of everything that is held in the orca-eye-aye part of Orcasound's visual sandbox S3 bucket?

I suggest putting it here -- https://github.com/orcasound/orca-eye-aye?tab=readme-ov-file#most-recent-added-dataset

[tsuize]

summary added under 'most recent added dataset'. But inside the summary, I also mentioned the 'model' and 'result' folder which is not part of the dataset...which is a little weird.
I also added a part "how to get dataset". Inside this part, I add the option to use roboflow universe to get our dataset.