[Railgun] v0.1.0

[Robert-MacWha]

• feat: railgun lib unshield native support #142
• [Railgun] Snap Sync #140
• feat: update railgun 4337 broadcaster, optimize gas estimation, enable mainnet #196
• [Railgun] Refactor TxBuilder #146
• feat: add logging option to RailgunPluginConfig #197
• feat: expose poi status in balance fns #198
• Benchmarks
  • Native + wasm-bindgen
  • Sync UTXO
  • Sync TXID
  • Prove Transact (1x2, 1x3, 2x2, 2x3, 6x6, 13x13)
  • Prove POI (3x3, 13x13)

[kassandraoftroy]

renaming this to 0.1.0 (since we'll bump to a minor version first)