63 enhancement reduce overall memory consumption and improve read speed

[koculu]

To reduce the memory consumption of ZoneTree, the following optimizations have been implemented:

• Convert byte arrays (byte[]) into Memory<byte> to eliminate unnecessary buffer copies.
• Utilize ArrayPool for efficient memory management.
• Enhance read block caches by replacing the unstable CircularBlockCache.
• Pin iterators to single block cache to prevent multiple block caches from consuming memory during a table scan.
• Create and persist default sparse arrays upon disk segment creation.
• Implement key and value caches for each disk segment to minimize IO operations.
• Optimize the default configuration options.