Fix OSS build

Summary:
`CatalystInstanceImpl.cpp` now depends on `JSCallInvoker` and `JavaJSCallInvokerHolder`. Therefore, we need to correctly adjust the OSS builds to include these dependencies into the `libreactnativejni.so` file.

I made `ReactCommon/turbomodule/jscallinvoker` a static library `libjscallinvoker.a`. I then made `ReactAndroid/src/main/jni/react/jni`'s `libreactnativejni.so` depend on that static library. Also, because the Android NDK build system doesn't support header namespaces, I had to use the filesystem to simulate them. This is why all the `.cpp` and `.h` files for `JSCallInvoker` were moved to a `jsireact` folder.

Reviewed By: mdvacca

Differential Revision: D15194821

fbshipit-source-id: 0cee682e41db53d0619f56ad017d5882f6d554aa

ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/jni/Android.mk

@@ -0,0 +1,29 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+# Header search path for all source files in this module.
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/jsireact
+
+# Header search path for modules that depend on this module
+LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)
+
+LOCAL_CFLAGS += -fexceptions -frtti -std=c++14 -Wall
+
+LOCAL_STATIC_LIBRARIES = libjscallinvoker
+
+LOCAL_SHARED_LIBRARIES = libfb
+
+# Name of this module.
+LOCAL_MODULE := jscallinvokerholder
+
+# Compile all local c++ files under ./platform/android/jsireact
+LOCAL_SRC_FILES := $(LOCAL_PATH)/jsireact/JSCallInvokerHolder.cpp
+
+# Build the files in this directory as a shared library
+include $(BUILD_STATIC_LIBRARY)

ReactAndroid/src/main/java/com/facebook/react/turbomodule/core/jni/BUCK

@@ -3,13 +3,13 @@ load("@fbsource//tools/build_defs/oss:rn_defs.bzl", "ANDROID", "FBJNI_TARGET", "
 rn_xplat_cxx_library(
     name = "jni",
     srcs = [
-        "OnLoad.cpp",
-        "TurboModuleManager.cpp",
+        "jsireact/OnLoad.cpp",
+        "jsireact/TurboModuleManager.cpp",
     ],
     header_namespace = "",
     exported_headers = {
-        "jsireact/TurboModuleManager.h": "TurboModuleManager.h",
-        "jsireact/TurboModuleManagerDelegate.h": "TurboModuleManagerDelegate.h",
+        "jsireact/TurboModuleManager.h": "jsireact/TurboModuleManager.h",
+        "jsireact/TurboModuleManagerDelegate.h": "jsireact/TurboModuleManagerDelegate.h",
     },
     compiler_flags = [
         "-fexceptions",
@@ -39,11 +39,11 @@ rn_xplat_cxx_library(
 rn_xplat_cxx_library(
     name = "jscallinvokerholder",
     srcs = [
-        "JSCallInvokerHolder.cpp",
+        "jsireact/JSCallInvokerHolder.cpp",
     ],
     header_namespace = "",
     exported_headers = {
-        "jsireact/JSCallInvokerHolder.h": "JSCallInvokerHolder.h",
+        "jsireact/JSCallInvokerHolder.h": "jsireact/JSCallInvokerHolder.h",
     },
     compiler_flags = [
         "-fexceptions",