feat: config read from command line as '--c'

src/main.rs

@@ -30,7 +30,15 @@ fn main() -> io::Result<()> {
         }
     };
 
-    let config = read_config(DEFAULT_CONFIG_PATH, default_config); // TODO: read config from param
+    let config_path: &str = {
+        if args.len() > 2 && args[1] == "--c" {
+            &args[2]
+        } else {
+            DEFAULT_CONFIG_PATH
+        }
+    };
+
+    let config = read_config(config_path, default_config);
 
     let word_source_result = FileDatabase::new(&config.database_path);