Feat bucket owner name

[RK181]

Enhancements to owner display:

• Added a new utility function shortenFullname in src/lib/utils.ts to abbreviate full names for display purposes.
• Updated ResponsiveOwnerField in src/components/ResponsiveOwnerField/index.tsx to accept both owner and sub props, and to use the shortened owner name when available.
• Modified the bucket list table in src/pages/ui/minio/components/BucketList/index.tsx to display the shortened owner name if present, falling back to the owner ID otherwise.

Support for new owner metadata:

• Extended the Bucket interface and related data structures to support an optional owner_name field in metadata, allowing full names to be stored and accessed.

UI consistency improvements:

• Updated the topbar component in src/pages/ui/minio/components/Topbar.tsx to show the shortened owner name when available, improving readability.