Use Kotlin for Gradle DSL

buildSrc/src/main/java/Versions.kt

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+object Versions {
+    object Gradle {
+        const val buildTools = "7.1.2"
+    }
+
+    object Kotlin {
+        const val core = "1.7.0"
+        const val coroutines = "1.6.2"
+    }
+
+    object Dokka {
+        const val core = "1.6.21"
+    }
+
+    object Dagger {
+        const val core = "2.42"
+    }
+
+    object Moshi {
+        const val core = "1.13.0"
+    }
+
+    object AndroidX {
+        const val core = ""
+
+        object Navigation {
+            const val core = "2.5.0"
+        }
+
+        object Testing {
+            const val coreKtx = "1.4.0"
+        }
+
+        object WorkManager {
+            const val core = "2.7.1"
+        }
+    }
+
+    object Junit {
+        const val legacy = "4.13.2"
+        const val jupiter = "5.7.1"
+    }
+
+    object Mockk {
+        const val core = "1.12.4"
+        const val android = "1.12.4"
+    }
+
+    object Kotest {
+        const val core = "4.6.4"
+    }
+}