* basic StorageBucketResponse items in table
* basic bucket file explorer
* policy count for each bucket
* don't show root folder on explorer
It's confusing in the new surrounding UI
* fix height for StorageExplorer
* reuse existing header
* fix overrides
* fix additional overrides
* improve table columns
* clarify copywriting and remove redundancy
* organise imports
* minor clean up
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Co-authored-by: Joshen Lim <joshenlimek@gmail.com>
