message: Litecoin: Bump blockchain size to 22GB
  Currently bytes as of block
diff: static const uint64_t GB_BYTES = 1000000000LL;
  /* Minimum free space (in GB) needed for data directory */
  -constexpr uint64_t BLOCK_CHAIN_SIZE = 20;
  +constexpr uint64_t BLOCK_CHAIN_SIZE = 22;
  /* Minimum free space (in GB) needed for data directory when pruned; Does not include prune target */
  static const uint64_t CHAIN_STATE_SIZE = 3;
  /* Total required space (in GB) depending on user choice (prune, not prune) */
  