[FLINK-24859][doc][formats] Make new formats name coherent: introduce previous names classes to indicate deprecation to the users

[echauchot]

This is linked to this PR. It adds deprecation notices on the old format names for the users.
As discussed R: @AHeise

[echauchot]

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• c18e5b9 Azure: CANCELED

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[AHeise]

LGTM! Thanks.

[echauchot]

Thanks Arvid for merging !