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/Cargo.lock

@@ -1450,6 +1450,20 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "flexi_logger"
+version = "0.15.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33897654c23a50cebab45e18356f69fb771c9949a6928344fb1f01ffccc7c5f3"
+dependencies = [
+ "chrono",
+ "glob 0.3.0",
+ "log",
+ "regex",
+ "thiserror",
+ "yansi",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.6"
@@ -6133,8 +6147,8 @@ dependencies = [
  "atty",
  "chrono",
  "derive_more",
- "env_logger 0.7.1",
  "fdlimit",
+ "flexi_logger",
  "futures 0.3.5",
  "lazy_static",
  "log",
@@ -9878,6 +9892,12 @@ dependencies = [
  "static_assertions",
 ]
 
+[[package]]
+name = "yansi"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9fc79f4a1e39857fc00c3f662cbf2651c771f00e9c15fe2abc341806bd46bd71"
+
 [[package]]
 name = "zeroize"
 version = "1.1.0"