Add previously omitted "lib" crate-type

Author: tnull

Cargo.toml

@@ -14,7 +14,7 @@ categories = ["cryptography::cryptocurrencies"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [lib]
-crate-type = ["staticlib", "cdylib"]
+crate-type = ["lib", "cdylib", "staticlib"]
 name = "ldk_node"
 
 [[bin]]