added util binary for generating default config file. also adding generated config file

src/util.rs

@@ -0,0 +1,34 @@
+mod app;
+
+use std::{fs::File, io::Write};
+
+use app::config::config::Config;
+use clap::{Parser, Subcommand};
+
+#[derive(Parser)]
+pub struct Args {
+    #[command(subcommand)]
+    pub command: CommandArg,
+}
+
+#[derive(Subcommand)]
+pub enum CommandArg {
+    /// Generates a default docki.config.toml
+    GenerateDefaultConfig,
+}
+
+fn main() {
+    let args = Args::parse();
+    match args.command {
+        CommandArg::GenerateDefaultConfig => generate_default_config(),
+    }
+}
+
+fn generate_default_config() {
+    let default_config = Config::default();
+    let target_file = "config/docki.config.toml";
+	let mut file = File::create(target_file).unwrap();
+    let output = toml::to_string_pretty(&default_config).unwrap();
+
+	file.write_all(output.as_bytes()).unwrap();
+}