feat: Add gradle task to automatically copy the codegen artifacts for paper

Example/android/gradle.properties

@@ -49,3 +49,5 @@ hermesEnabled=true
 # This is necessary, because the code checking for multiple instances
 # detects package versions from other example applications in the repository.
 disableMultipleInstancesCheck=true
+
+isScreensExampleApp=true

FabricExample/android/gradle.properties

@@ -39,3 +39,5 @@ newArchEnabled=true
 # Use this property to enable or disable the Hermes JS engine.
 # If set to false, you will be using JSC instead.
 hermesEnabled=true
+
+isScreensExampleApp=true

FabricTestExample/android/gradle.properties

@@ -41,3 +41,5 @@ newArchEnabled=true
 hermesEnabled=true
 
 disableMultipleInstancesCheck=true
+
+isScreensExampleApp=true

TVOSExample/android/gradle.properties

@@ -26,3 +26,5 @@ android.enableJetifier=true
 
 # Version of flipper SDK to use with React Native
 FLIPPER_VERSION=0.75.1
+
+isScreensExampleApp=true

TestsExample/android/gradle.properties

@@ -41,3 +41,5 @@ newArchEnabled=false
 hermesEnabled=true
 
 disableMultipleInstancesCheck=true
+
+isScreensExampleApp=true

android/build.gradle

@@ -192,3 +192,79 @@ dependencies {
         }
     }
 }
+
+def isScreensExampleApp() {
+    return project.hasProperty('isScreensExampleApp') && project.property('isScreensExampleApp') == "true"
+}
+
+def getAbsoluteCodegenArtifactsPaperDestination() {
+    if (!project.hasProperty('codegenArtifactsPaperDestination')) {
+        throw new Exception('[RNScreens] Please fill codegenArtifactsPaperDestination variable in android/gradle.properties correct path to paper paper destination')
+    }
+
+    return "${project.rootDir}/../../${project.property('codegenArtifactsPaperDestination')}"
+}
+
+def getAbsoluteCodegenArtifactsSource() {
+    if (!project.hasProperty('codegenArtifactsSource')) {
+        throw new Exception('[RNScreens] Please fill codegenArtifactsSource variable in android/gradle.properties correct path to codegenerated artifacts')
+    }
+
+    return "${project.rootDir}/../../${project.property('codegenArtifactsSource')}"
+}
+
+
+tasks.register("copyCodegenArtifacts") {
+    group 'After build tasks'
+    description 'Tasks which copy codegen artifacts to paper architecture'
+
+    if (!isScreensExampleApp() || !isNewArchitectureEnabled()) {
+        return
+    }
+
+    dependsOn tasks.generateCodegenArtifactsFromSchema
+
+    doLast {
+
+        def absoluteCodegenArtifactsPaperDestination = getAbsoluteCodegenArtifactsPaperDestination()
+        def absoluteCodegenArtifactsSource = getAbsoluteCodegenArtifactsSource()
+
+        def existingFiles = fileTree(absoluteCodegenArtifactsPaperDestination).matching {
+            include '**/*.java'
+        }
+
+        def generatedFiles = fileTree(absoluteCodegenArtifactsSource).matching {
+            include '**/*.java'
+        }
+
+        def existingFilesMap = [:]
+
+        existingFiles.forEach { existingFile ->
+            existingFilesMap[existingFile.name] = 1
+        }
+
+        generatedFiles.forEach { generatedFile -> 
+            if (!existingFilesMap.containsKey(generatedFile.name)) {
+                logger.warn("[RNScreens] ${generatedFile.name} not found in paper dir, if it's used in Android you need to copy it manually and implement yourself before using auto-copy feature")
+            }
+        }
+
+        if (existingFiles.size() == 0) {
+            logger.warn("[RNScreens] Paper destination with codegen interfaces is empty. This might be okay if you don't have any interfaces/delegates used in Android, if that's not the case please check if codegenArtifactsPaperDestination in android/gradle.properties is correct")
+        }
+
+        if (existingFiles.size() > generatedFiles.size()) {
+            throw new Exception("[RNScreens] Number od generated artifacts should be greather then or equal to paper interfaces. Please check if codegenArtifactsSource in android/gradle.properties is correct")
+        }
+
+        copy {
+            from absoluteCodegenArtifactsSource
+            include existingFiles.collect { it.name }
+            into absoluteCodegenArtifactsPaperDestination
+        }
+    }
+}
+
+if (isScreensExampleApp() && isNewArchitectureEnabled()) {
+    tasks.generateCodegenArtifactsFromSchema.finalizedBy('copyCodegenArtifacts')
+}

android/gradle.properties

@@ -21,3 +21,10 @@ android.useAndroidX=true
 android.enableJetifier=true
 
 kotlin.code.style=official
+
+# Path to codegen output directory with this library view manager's interfaces & delegates. Used by `copyCodegenArtifacts` task that helps to synchronise newly generated files with their Paper conterparts.
+codegenArtifactsSource=android/build/generated/source/codegen/java/com/facebook/react/viewmanagers
+
+# Path to directory with view manager's interfaces & delegates used while running on Paper architecture. This property is used as output path for `copyCodegenArtifacts` task.
+# Used for task (copyCodegenArtifacts) that automates copying those interfaces/delegates when codegen is run
+codegenArtifactsPaperDestination=android/src/paper/java/com/facebook/react/viewmanagers/