feat(configuration): Add global configuration

also update some error messages

src/main.rs

@@ -1,26 +1,11 @@
-use core::panic;
-use std::{env, path::PathBuf};
-
-use clap::Parser;
 use std::error::Error;
 
+mod configuration;
 mod file_explorer;
 mod grpc;
 
-#[derive(Parser)]
-#[command(version, about, long_about = None)]
-struct Args {
-    #[arg(help = "Directory to scan for files")]
-    path: Option<PathBuf>,
-}
-
 #[tokio::main()]
 async fn main() -> Result<(), Box<dyn Error>> {
-    let cli = Args::parse();
-    let path = cli
-        .path
-        .unwrap_or(env::current_dir().expect("Current directory is not available."));
-
     let server = grpc::run()?;
 
     server.connect().await?;