Node template folders restructuring (#4811)

* Restructure node-template so it is clear that node, runtime, and pallets are separated
* Separating to mock and tests
* restructuring runtime to top-level
* updated release script
* updated Cargo.lock

substrate/bin/node-template/node/src/main.rs

@@ -0,0 +1,25 @@
+//! Substrate Node Template CLI library.
+#![warn(missing_docs)]
+
+mod chain_spec;
+#[macro_use]
+mod service;
+mod cli;
+mod command;
+
+pub use sc_cli::{VersionInfo, error};
+
+fn main() -> Result<(), error::Error> {
+	let version = VersionInfo {
+		name: "Substrate Node",
+		commit: env!("VERGEN_SHA_SHORT"),
+		version: env!("CARGO_PKG_VERSION"),
+		executable_name: "node-template",
+		author: "Anonymous",
+		description: "Template Node",
+		support_url: "support.anonymous.an",
+		copyright_start_year: 2017,
+	};
+
+	command::run(version)
+}