Add log rotation (#6564)

* Use flexi_logger; Add log rotation

* Add default rotation; Add FlexiLogger error

* Fix compilation error

* Remove logging to stdout if it's not a tty

* Fix formatting

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Remove needless debug statement

* Default to unlimited size for log rotation

* Add more comments about log-age option

* Remove unused variable

* Fix typo in comment

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

substrate/client/cli/src/error.rs

@@ -17,6 +17,7 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 //! Initialization errors.
+use flexi_logger::FlexiLoggerError;
 
 /// Result type alias for the CLI.
 pub type Result<T> = std::result::Result<T, Error>;
@@ -32,6 +33,8 @@ pub enum Error {
 	Service(sc_service::Error),
 	/// Client error
 	Client(sp_blockchain::Error),
+	/// Flexi Logger error
+	FlexiLogger(FlexiLoggerError),
 	/// Input error
 	#[from(ignore)]
 	Input(String),
@@ -65,6 +68,7 @@ impl std::error::Error for Error {
 			Error::Cli(ref err) => Some(err),
 			Error::Service(ref err) => Some(err),
 			Error::Client(ref err) => Some(err),
+			Error::FlexiLogger(ref err) => Some(err),
 			Error::Input(_) => None,
 			Error::InvalidListenMultiaddress => None,
 			Error::Other(_) => None,