Add sample component with state in RNTester (#34909)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/34909

This Diff introduces a Sample component in RNTester which uses the NativeState to load some images.
It is an example on how to use CustomNativeState

In this first diff, I focused on the iOS side of things. The next diff will make this work with Android.

## Changelog
[iOS][Added] - Introduce sample component which work with the native state.

Reviewed By: cortinico

Differential Revision: D39884926

fbshipit-source-id: 9323d751fd06a1bb8ff93af836d97010c2095833

packages/rn-tester/NativeComponentWithState/NativeComponentWithState.podspec

@@ -0,0 +1,38 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+require "json"
+
+package = JSON.parse(File.read(File.join(__dir__, "../" "package.json")))
+
+Pod::Spec.new do |s|
+  s.name            = "NativeComponentWithState"
+  s.version         = package["version"]
+  s.summary         = package["description"]
+  s.description     = "native-component-with-state"
+  s.homepage        = "https://github.com/sota000/my-native-view.git"
+  s.license         = "MIT"
+  s.platforms       = { :ios => "12.4", :tvos => "12.4" }
+  s.compiler_flags  = '-Wno-documentation -Wno-nullability-completeness'
+  s.author          = "Facebook, Inc. and its affiliates"
+  s.source          = { :git => "https://github.com/facebook/my-native-view.git", :tag => "#{s.version}" }
+  s.pod_target_xcconfig    = {
+    "HEADER_SEARCH_PATHS" => "\"$(PODS_ROOT)/RCT-Folly\" \"$(PODS_ROOT)/boost\" \"${PODS_CONFIGURATION_BUILD_DIR}/React-Codegen/React_Codegen.framework/Headers\"",
+    "CLANG_CXX_LANGUAGE_STANDARD" => "c++17"
+  }
+
+  s.source_files    = "ios/**/*.{h,m,mm,cpp}"
+  s.requires_arc    = true
+
+  install_modules_dependencies(s)
+
+  # Enable codegen for this library
+  use_react_native_codegen!(s, {
+    :library_name => "NativeComponentWithStateSpec",
+    :react_native_path => "../../../",
+    :js_srcs_dir => "./js",
+    :library_type => "components"
+  })
+end