FrequencyBandsTable

[mavaylon1]

Motivation

This PR is to formally define bands within DecompositionSeries as a formal neurodatatype FrequencyBandsTable.

Checklist

• Did you update CHANGELOG.md with your changes?
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[rly]

Update: this PR requires the latest changes in HDMF to be released. The plan is to release HDMF 4.1.0 next Tuesday. Some new warnings have also appeared in the test suite in this PR and need to be addressed.