feat: public ::new() for BuilderContext (#7358)

crates/node-builder/src/builder.rs

@@ -523,14 +523,7 @@ where
         let blockchain_db =
             BlockchainProvider::new(provider_factory.clone(), blockchain_tree.clone())?;
 
-        let ctx = BuilderContext {
-            head,
-            provider: blockchain_db,
-            executor,
-            data_dir,
-            config,
-            reth_config,
-        };
+        let ctx = BuilderContext::new(head, blockchain_db, executor, data_dir, config, reth_config);
 
         debug!(target: "reth::cli", "creating components");
         let NodeComponents { transaction_pool, network, payload_builder } =
@@ -1083,6 +1076,18 @@ pub struct BuilderContext<Node: FullNodeTypes> {
 }
 
 impl<Node: FullNodeTypes> BuilderContext<Node> {
+    /// Create a new instance of [BuilderContext]
+    pub fn new(
+        head: Head,
+        provider: Node::Provider,
+        executor: TaskExecutor,
+        data_dir: ChainPath<DataDirPath>,
+        config: NodeConfig,
+        reth_config: reth_config::Config,
+    ) -> Self {
+        Self { head, provider, executor, data_dir, config, reth_config }
+    }
+
     /// Returns the configured provider to interact with the blockchain.
     pub fn provider(&self) -> &Node::Provider {
         &self.provider