refactor: LoginNavigator 추가

feature/login/src/main/java/com/kusitms/connectdog/feature/login/LoginNavigation.kt

@@ -0,0 +1,53 @@
+package com.kusitms.connectdog.feature.login
+
+import androidx.navigation.NavController
+import androidx.navigation.NavGraphBuilder
+import androidx.navigation.compose.composable
+import com.kusitms.connectdog.feature.signup.VolunteerSignupScreen
+
+fun NavController.navigateLogin() {
+    navigate(LoginRoute.route)
+}
+
+fun NavController.navigateSignup() {
+    navigate(LoginRoute.signup)
+}
+
+fun NavController.navigateNormalLogin() {
+    navigate(LoginRoute.normal_login)
+}
+
+fun NavGraphBuilder.loginNavGraph(
+    onBackClick: () -> Unit,
+    onNavigateToNormalLogin: () -> Unit,
+    onNavigateToVolunteer: () -> Unit,
+    onNavigateToSignup: () -> Unit
+) {
+    composable(route = LoginRoute.route) {
+        LoginRoute(
+            onNavigateToNormalLogin,
+            onNavigateToSignup
+        )
+    }
+
+    composable(route = LoginRoute.normal_login) {
+        NormalLoginScreen(
+            onBackClick = onBackClick,
+            initVolunteer = {},
+            initIntermediator = {},
+            test = onNavigateToVolunteer
+        )
+    }
+
+    composable(route = LoginRoute.signup) {
+        VolunteerSignupScreen(
+//            onBackClick = onBackClick
+        )
+    }
+}
+
+object LoginRoute {
+    const val route = "login"
+    const val normal_login = "normal_login"
+    const val signup = "signup"
+}