Update on review comments

1. changed implementations from camelcase to lowercase
2. added removed initSteps.
3. updated rout struct for model.go

pkg/plugin/implementation/requestPreProcessor/cmd/plugin.go

@@ -5,7 +5,7 @@ import (
 	"net/http"
 	"strings"
 
-	requestpreprocessor "github.com/beckn/beckn-onix/pkg/plugin/implementation/requestPreProcessor"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/requestpreprocessor"
 )
 
 type provider struct{}