feat: Pseudo peer and staged sync

For simplicity, we use with_pow() + pseudo peer that connects to reth itself, so that it can support 1. StateFetcher via NetworkState 2. Block announcement (which requires with_pow()).

For block announcement, another way was using ImportService like before, or calling engine_api. But for simplicitiy, for now we just publish from pseudo peer like pre-PoS, hence with_pow().

src/pseudo_peer/main.rs

@@ -0,0 +1,16 @@
+use clap::Parser;
+use reth_my_p2p::cli::PseudoPeerCommand;
+
+#[tokio::main]
+async fn main() -> eyre::Result<()> {
+    let cli = PseudoPeerCommand::parse();
+    cli.logs.init_tracing()?;
+
+    // Parse and create block source configuration
+    let block_source_config = cli.source.parse().await?;
+    let block_source = block_source_config.create_cached_block_source().await;
+
+    // Start the worker
+    reth_my_p2p::start_pseudo_peer(cli.destination_peer, block_source).await?;
+    Ok(())
+}