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/pallets/template/src/tests.rs

@@ -0,0 +1,26 @@
+// Tests to be written here
+
+use crate::{Error, mock::*};
+use frame_support::{assert_ok, assert_noop};
+
+#[test]
+fn it_works_for_default_value() {
+	new_test_ext().execute_with(|| {
+		// Just a dummy test for the dummy funtion `do_something`
+		// calling the `do_something` function with a value 42
+		assert_ok!(TemplateModule::do_something(Origin::signed(1), 42));
+		// asserting that the stored value is equal to what we stored
+		assert_eq!(TemplateModule::something(), Some(42));
+	});
+}
+
+#[test]
+fn correct_error_for_none_value() {
+	new_test_ext().execute_with(|| {
+		// Ensure the correct error is thrown on None value
+		assert_noop!(
+			TemplateModule::cause_error(Origin::signed(1)),
+			Error::<Test>::NoneValue
+		);
+	});
+}