add treetest protocol simulator and ui

treetest/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "treetest"
+version.workspace = true
+edition.workspace = true
+authors.workspace = true
+license.workspace = true
+repository.workspace = true
+
+[dependencies]
+crossbeam-channel = "0.5.15"
+crossterm = "0.29.0"
+ratatui = { version = "0.30.0", default-features = false, features = ["crossterm_0_29"] }
+thiserror = { workspace = true }
+unshell = { path = ".." }
+
+[lints.rust]
+elided_lifetimes_in_paths = "warn"
+future_incompatible = { level = "warn", priority = -1 }
+nonstandard_style = { level = "warn", priority = -1 }
+rust_2018_idioms = { level = "warn", priority = -1 }
+rust_2021_prelude_collisions = "warn"
+semicolon_in_expressions_from_macros = "warn"
+unsafe_op_in_unsafe_fn = "warn"
+unused_import_braces = "warn"
+unused_lifetimes = "warn"
+trivial_casts = "allow"