Added FSM rendering via graphviz

Cargo.lock

@@ -34,6 +34,7 @@ name = "configotron"
 version = "0.1.0"
 dependencies = [
  "graphviz-rust",
+ "itertools",
  "pad",
  "rand",
  "serde",
@@ -85,6 +86,12 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "498cfcded997a93eb31edd639361fa33fd229a8784e953b37d71035fe3890b7b"
 
+[[package]]
+name = "either"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -194,6 +201,15 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.15"