sim-cli: source simulation file from data directory

  sim-cli expects SIMLN_DATA_DIR/sims to contain simulation files in json format, and it can:
     - prompt a user to select a file from this directory
     - find a pre-selected file when --sim-file option is provided

Author: okjodom

Cargo.lock

@@ -8,6 +8,7 @@ edition = "2021"
 [dependencies]
 anyhow = { version = "1.0.69", features = ["backtrace"] }
 clap = { version = "4.1.6", features = ["derive", "env", "std", "help", "usage", "error-context", "suggestions"], default-features = false }
+dialoguer = "0.11.0"
 log = "0.4.20"
 serde = "1.0.183"
 serde_json = "1.0.104"