add manual crud commands.

refactor cli interface.
remove file handler.

Cargo.toml

@@ -14,10 +14,12 @@ log = { version = "0.4", features = ["std", "serde"] }
 simple_logger = "1.16.0"
 strfmt = "0.1.6"
 dirs = "4.0.0"
+dotenv = "0.15.0"
+clap = { version = "4.4.12", features = ["derive"]}
 
 [profile.release]
 opt-level = 3
 lto = true
 debug = false
 codegen-units = 1
-panic = "abort"
+panic = "abort"