feat: set addr from config

configs/howmuch.yml

@@ -20,6 +20,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
+addr: :8080
+
 db:
   # DB host
   host: 127.0.0.1

internal/howmuch/howmuch.go

@@ -110,7 +110,7 @@ func run() error {
 		})
 	})
 
-	r.Run(":8080")
+	r.Run(viper.GetString("addr"))
 
 	return nil
 }