sc 0.65.1, chain 0.22.1, sdk 0.15.1

• sc-meta improvements:
  • sc-meta wallet new --shard <id> flag: generates a new wallet whose address belongs to the given shard;
  • sc-meta all proxy
    • Better crate path handling;
    • --verbose flag: prints each proxy file path as it is generated.
  • sc-meta test-gen generates .insert_ghost_accounts() call in test setup (only used in internal tests).
• SDK:
  • Accept trailing slash in gateway URL (automatically normalized);
  • Fixed a transaction decode issue in sdk/core;
  • Test wallets provided for each shard, including a function that returns the wallet for that ShardId.
• Chain core: new ShardId type and ShardConfig infrastructure:
  • ShardId represents a shard identifier, with special values for metachain;
  • ShardConfig encodes the shard structure of the network (number of shards, address distribution);
  • Functionality to get the shard of an Address;
  • Utility for checking whether an address is of a system SC.
• Base framework improvements:
  • ManagedArgBuffer implements ManagedVecItem.
  • Display trait implemented by BigInt, BigUint, NonZeroBigUint, Payment and EsdtTokenPayment.