Visualisation logging for sync batch states (#6034)

* Add visualization for batch states

* Replace icons with emojis

* Reviewers comments

* Change empty emoji and improve docs comments

* Fix lints

* Move to letters rather than emojis

* Replace 'V' with 'v'. Cargo update

* Merge latest unstable

* Improve docs around visualisation

* Merge branch 'unstable' into sync-batch-state

Cargo.lock

@@ -1021,9 +1021,9 @@ dependencies = [
 
 [[package]]
 name = "blst"
-version = "0.3.12"
+version = "0.3.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62dc83a094a71d43eeadd254b1ec2d24cb6a0bb6cadce00df51f0db594711a32"
+checksum = "4378725facc195f1a538864863f6de233b500a8862747e7f165078a419d5e874"
 dependencies = [
  "cc",
  "glob",
@@ -5751,9 +5751,9 @@ dependencies = [
 
 [[package]]
 name = "object"
-version = "0.36.1"
+version = "0.36.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "081b846d1d56ddfc18fdf1a922e4f6e07a11768ea1b92dec44e42b72712ccfce"
+checksum = "3f203fa8daa7bb185f760ae12bd8e097f63d17041dcdcaf675ac54cdf863170e"
 dependencies = [
  "memchr",
 ]