Blockscout ENS: v1

[sevenzing]

The goal is to add ENS names to blockscout. To to do it we decided to use subgraphs solution for indexing and write http server above it for convenient API.

Initial ENS on ethereum

• [x] Server https://github.com/blockscout/blockscout-rs/issues/641
• [x] Graph-node and initial ENS subgraph https://github.com/blockscout/blockscout-rs/pull/650

RNS on rootstock

• [x] Subgraph for RNS https://github.com/blockscout/blockscout-rs/pull/650

Genome on gnosis

• [x] Subgraph for Genone (during development write doc "how to write subgraphs") https://github.com/blockscout/blockscout-rs/pull/691
• [ ] Support for SPACE.id protocol in bens-server https://github.com/blockscout/blockscout-rs/issues/673

Bug fixes

• [x] Coin type is number, should be coin name https://github.com/blockscout/blockscout-rs/pull/702
• [x] Unresolved names not found https://github.com/blockscout/blockscout-rs/pull/701
• [x] Gnosis namehash bug https://github.com/blockscout/blockscout-rs/pull/708
• [x] Frontend bugs https://github.com/blockscout/blockscout-rs/issues/723