Enable Kotlin build in OSS (#33160)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/33160

Enables Kotlin build in RNAndroid, while adjusting the package structure to help with path/package inconsistency.

Moves `react/uimanager/interfaces` files into `react/uimanager` to make sure package name matches with file location and updates Buck configuration to still include it as a separate target.

Changelog: [Android][Changed] - Moved `com/react/facebook/uimanager/interfaces` files into `com/react/facebook/uimanager` to enable Kotlin build

Reviewed By: cortinico

Differential Revision: D34381179

fbshipit-source-id: 252588d9c7f62b8019bdfcce66197628d63e63a1

ReactAndroid/build.gradle

@@ -8,6 +8,7 @@
 plugins {
     id("com.android.library")
     id("com.facebook.react")
+    id("org.jetbrains.kotlin.android")
     id("maven-publish")
     id("de.undercouch.download")
 }

ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK

@@ -1,5 +1,34 @@
 load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
+INTERFACES_FILES = [
+    "BaseViewManagerDelegate.java",
+    "BaseViewManagerInterface.java",
+    "ViewManagerDelegate.java",
+    "ViewProps.java",
+    "Spacing.java",
+    "FloatUtil.java",
+]
+
+rn_android_library(
+    name = "interfaces",
+    srcs = glob(INTERFACES_FILES),
+    autoglob = False,
+    is_androidx = True,
+    labels = ["supermodule:xplat/default/public.react_native.infra"],
+    provided_deps = [
+        react_native_dep("third-party/android/androidx:annotation"),
+    ],
+    required_for_source_only_abi = True,
+    visibility = [
+        "PUBLIC",
+    ],
+    deps = [
+        YOGA_TARGET,
+        react_native_dep("third-party/java/jsr-305:jsr-305"),
+        react_native_target("java/com/facebook/react/bridge:bridge"),
+    ],
+)
+
 rn_android_library(
     name = "uimanager",
     srcs = glob(
@@ -11,7 +40,7 @@ rn_android_library(
         ],
         exclude = [
             "DisplayMetricsHolder.java",
-        ],
+        ] + INTERFACES_FILES,
     ),
     autoglob = False,
     exported_provided_deps = [
@@ -53,9 +82,9 @@ rn_android_library(
     ],
     exported_deps = [
         ":DisplayMetrics",
+        ":interfaces",
         react_native_dep("third-party/java/jsr-305:jsr-305"),
         react_native_target("java/com/facebook/react/uimanager/common:common"),
-        react_native_target("java/com/facebook/react/uimanager/interfaces:interfaces"),
     ],
 )
 

ReactAndroid/src/main/java/com/facebook/react/uimanager/interfaces/BUCK

@@ -1,21 +0,0 @@
-load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
-
-rn_android_library(
-    name = "interfaces",
-    srcs = glob(["*.java"]),
-    autoglob = False,
-    is_androidx = True,
-    labels = ["supermodule:xplat/default/public.react_native.infra"],
-    provided_deps = [
-        react_native_dep("third-party/android/androidx:annotation"),
-    ],
-    required_for_source_only_abi = True,
-    visibility = [
-        "PUBLIC",
-    ],
-    deps = [
-        YOGA_TARGET,
-        react_native_dep("third-party/java/jsr-305:jsr-305"),
-        react_native_target("java/com/facebook/react/bridge:bridge"),
-    ],
-)

packages/react-native-codegen/DEFS.bzl

@@ -485,7 +485,7 @@ def rn_codegen_components(
             deps = [
                 react_native_dep("third-party/android/androidx:annotation"),
                 react_native_target("java/com/facebook/react/bridge:bridge"),
-                react_native_target("java/com/facebook/react/uimanager/interfaces:interfaces"),
+                react_native_target("java/com/facebook/react/uimanager:interfaces"),
             ],
         )