Add the configuration struct for yabridgectl

tools/yabridgectl/src/main.rs

@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+mod config;
+
 fn main() {
     println!("Hello, world!");
 }