Feat: implement bitcoin relayer

.gitignore

@@ -7,4 +7,7 @@ artifacts
 vendor
 .DS_Store
 .*env
-dist
+dist
+
+keystore
+data

README.md

@@ -11,4 +11,35 @@ The following chains are supported:
 
 ## How to use ?
 
-Refer to the [WIKI](<https://github.com/icon-project/centralized-relay/wiki>).
+Refer to the [WIKI](https://github.com/icon-project/centralized-relay/wiki).
+
+## Bitcoin Relay
+
+How to run Slave server
+
+### Prerequisites
+
+Go 1.x installed
+Set up your environment variables as required
+
+### Start Slave 1
+
+```bash
+GO_ENV=slave PORT=8081 API_KEY=your_api_key go run main.go bitcoin
+```
+
+### Start Slave 2
+
+```bash
+GO_ENV=slave PORT=8082 API_KEY=your_api_key go run main.go bitcoin
+```
+
+### Start Master
+
+```bash
+ GO_ENV=master PORT=8080 SLAVE_SERVER_1=http://localhost:8081 SLAVE_SERVER_2=http://localhost:8082 API_KEY=your_api_key go run main.go bitcoin IS_PROCESS=1
+```
+
+This env to trigger call the slaves
+
+- IS_PROCESS=1

cmd/config.go

@@ -9,6 +9,7 @@ import (
 
 	jsoniter "github.com/json-iterator/go"
 
+	"github.com/icon-project/centralized-relay/relayer/chains/bitcoin"
 	"github.com/icon-project/centralized-relay/relayer/chains/solana"
 	"github.com/icon-project/centralized-relay/relayer/chains/steller"
 	"github.com/icon-project/centralized-relay/relayer/chains/sui"
@@ -266,6 +267,8 @@ func (iw *ProviderConfigYAMLWrapper) UnmarshalYAML(n *yaml.Node) error {
 		iw.Value = new(steller.Config)
 	case "sui":
 		iw.Value = new(sui.Config)
+	case "bitcoin":
+		iw.Value = new(bitcoin.Config)
 	default:
 		return fmt.Errorf("%s is an invalid chain type, check your config file", iw.Type)
 	}