Explorer Statistics and Nft/NativeToken metadata v3.1.0

• Added a Statistics page
• Unified Address page
• Nft and Native token metadata support
• Integrated Referenced Blocks for Milestone payload

Full Changelog: v3.0.0...v3.1.0

Explorer Stardust support v3.0.0

• Version targeted for the Shimmer network
• Explorer now also supports networks running the stardust protocol