Add Nav Component dependencies

Author: TonyTandAndroid

app/build.gradle

@@ -25,6 +25,12 @@ android {
 }
 
 dependencies {
+
+    def nav_version = "2.1.0"
+
+    implementation "androidx.navigation:navigation-fragment:$nav_version"
+    implementation "androidx.navigation:navigation-ui:$nav_version"
+
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.annotation:annotation:1.1.0'
     implementation 'com.google.android.material:material:1.1.0'