Separate the code generator to dedicated project

Cargo.toml

@@ -5,8 +5,6 @@ authors = ["moznion <moznion@gmail.com>"]
 edition = "2018"
 license-file = "LICENSE"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 md5 = "0.7.0"
 chrono = "0.4"
@@ -15,8 +13,7 @@ num_enum = "0.5.1"
 tokio = { version = "0.3.4", features = ["full"] }
 log = "0.4.11"
 thiserror = "1.0"
-regex = "1"
 async-trait = "0.1.42"
-getopts = "0.2" # TODO for dev
-Inflector = "0.11" # TODO for dev
-env_logger = "0.8.2" # TODO for dev
+
+[dev-dependencies]
+env_logger = "0.8.2"