Support beacon chain (#436)

foundation/src/main/kotlin/io/emeraldpay/dshackle/BlockchainType.kt

@@ -1,5 +1,18 @@
 package io.emeraldpay.dshackle
 
-enum class BlockchainType {
-    UNKNOWN, BITCOIN, ETHEREUM, STARKNET, POLKADOT, SOLANA, NEAR;
+enum class BlockchainType(
+    val apiType: ApiType,
+) {
+    UNKNOWN(ApiType.JSON_RPC),
+    BITCOIN(ApiType.JSON_RPC),
+    ETHEREUM(ApiType.JSON_RPC),
+    STARKNET(ApiType.JSON_RPC),
+    POLKADOT(ApiType.JSON_RPC),
+    SOLANA(ApiType.JSON_RPC),
+    NEAR(ApiType.JSON_RPC),
+    ETHEREUM_BEACON_CHAIN(ApiType.REST);
+}
+
+enum class ApiType {
+    JSON_RPC, REST;
 }

foundation/src/main/resources/chains.yaml

@@ -1361,3 +1361,36 @@ chain-settings:
           grpcId: 1052
           short-names: [dymension]
           chain-id: 0x44c
+    - id: eth-beacon-chain
+      label: Ethereum Beacon Chain
+      type: eth-beacon-chain
+      settings:
+        expected-block-time: 12s
+        lags:
+          syncing: 6
+          lagging: 1
+      chains:
+        - id: Mainnet
+          chain-id: 0x0
+          short-names: [eth-beacon-chain]
+          code: ETH_BEACON_CHAIN
+          grpcId: 1053
+          priority: 100
+        - id: Goerli
+          chain-id: 0x0
+          code: GOERLI_BEACON_CHAIN
+          grpcId: 10069
+          priority: 1
+          short-names: [eth-beacon-chain-goerli]
+        - id: Sepolia
+          code: SEPOLIA_BEACON_CHAIN
+          grpcId: 10070
+          priority: 10
+          chain-id: 0x0
+          short-names: [eth-beacon-chain-sepolia]
+        - id: Holesky
+          code: HOLESKY_BEACON_CHAIN
+          grpcId: 10071
+          priority: 5
+          chain-id: 0x0
+          short-names: [eth-beacon-chain-holesky]