Add links to versions of all dependencies

build.gradle

@@ -1,13 +1,21 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
+    // https://developer.android.com/jetpack/androidx/releases/navigation
     ext.nav_version = "2.4.0-beta02"
+
+    // https://dagger.dev/hilt/gradle-setup
     ext.hilt_version = "2.38.1"
+
+    // https://kotlinlang.org/docs/gradle.html
     ext.kotlin_version = "1.5.31"
+
     repositories {
         google()
         mavenCentral()
     }
+
     dependencies {
+        // https://maven.google.com/web/index.html?q=com.android.tools.build#com.android.tools.build:gradle
         classpath "com.android.tools.build:gradle:7.0.3"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "org.jetbrains.kotlin:kotlin-serialization:$kotlin_version"