revert: Revert "Revert "Modularize the app""

This reverts commit f59f2346dc.

buildSrc/src/main/kotlin/LocalesConfigPlugin.kt

@@ -0,0 +1,42 @@
+import org.gradle.api.Project
+import org.gradle.api.Task
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.kotlin.dsl.TaskContainerScope
+
+fun TaskContainerScope.registerLocalesConfigTask(project: Project): TaskProvider<Task> {
+    return with(project) {
+        register("generateLocalesConfig") {
+            val emptyResourcesElement = "<resources>\\s*</resources>|<resources/>".toRegex()
+            val valuesPrefix = "values-?".toRegex()
+
+            println(projectDir)
+            val languages = fileTree("$projectDir/src/main/res/")
+                .matching {
+                    include("**/strings.xml")
+                }
+                .filterNot {
+                    it.readText().contains(emptyResourcesElement)
+                }
+                .map { it.parentFile.name }
+                .sorted()
+                .joinToString(separator = "\n") {
+                    val language = it
+                        .replace(valuesPrefix, "")
+                        .replace("-r", "-")
+                        .takeIf(String::isNotBlank) ?: "en"
+                    "   <locale android:name=\"$language\"/>"
+                }
+
+            val content = """
+<?xml version="1.0" encoding="utf-8"?>
+<locale-config xmlns:android="http://schemas.android.com/apk/res/android">
+$languages
+</locale-config>
+    """.trimIndent()
+
+            val localeFile = file("$projectDir/src/main/res/xml/locales_config.xml")
+            localeFile.parentFile.mkdirs()
+            localeFile.writeText(content)
+        }
+    }
+}