Switch DEFAULT_NETWORK over to Bitcoin mainnet

As we're getting ready for release

Author: tnull

src/lib.rs

@@ -163,7 +163,7 @@ uniffi::include_scaffolding!("ldk_node");
 
 // Config defaults
 const DEFAULT_STORAGE_DIR_PATH: &str = "/tmp/ldk_node/";
-const DEFAULT_NETWORK: Network = Network::Regtest;
+const DEFAULT_NETWORK: Network = Network::Bitcoin;
 const DEFAULT_LISTENING_ADDR: &str = "0.0.0.0:9735";
 const DEFAULT_CLTV_EXPIRY_DELTA: u32 = 144;
 const DEFAULT_ESPLORA_SERVER_URL: &str = "https://blockstream.info/api";