Connext Vector Follow-ups

[erkarl]

• [x] estimate fee for withdrawals https://github.com/ExchangeUnion/xud/pull/2026
• [x] monitor channel address and reconcile deposit on demand instead of using interval https://github.com/ExchangeUnion/xud/pull/2027
• [x] setup testnet router
• [x] https://github.com/ExchangeUnion/xud/issues/2031
• [x] support on-chain transfers from signer address (https://github.com/ExchangeUnion/xud/pull/2043)
• [x] support for non-ETH currencies (https://github.com/ExchangeUnion/xud/pull/2043)
• [ ] channel timeout / transfer timeout / expiry checks
• [ ] backup connext db via backup deamon
• [ ] arm64 images
• [ ] simulation tests vector v2
• [ ] withdraw max amount
• [ ] setup mainnet router
• [ ] ERC20/ERC20 swaps not working
• [ ] handle edge case of transfer failed -> /preimage invalid format

[kilrau]

arm64 images

Tested this today, almost there, just needs switch to manifests.

[kilrau]

Reminder to add "nicer error message" for xud to the list (from the connext call, I believe it was for insufficient/no funds)