Align Example app template with 0.70.5 (software-mansion#3750)

## Description

This PR aligns Example app with RN 0.70.5 app template in order to simplify the process of adoption of RN 0.71.0 (software-mansion#3745).

Even though Example never runs with Fabric enabled (it's Paper-only), I decided to leave new-arch Java and C++ files which will be deleted in 0.71.0-rc.0 for the sake of completeness.

Example app has a few dependencies, e.g. SVG, PagerView or MaskedView - as of this PR they are autolinked instead of being linked manually in `settings.gradle`.

I also removed some files specific for tvOS since we already have a separate app called TVOSExample.

### TODO:

- [x] remove `react-native-gradle-plugin` from Example/package.json
- [x] check Android / iOS
- [ ] check debug / release
- [x] check debugging worklets (Flipper needs to be launched before the app)
- [x] check if `MaskedView` component works

Example/.buckconfig

@@ -0,0 +1,6 @@
+
+[android]
+  target = Google Inc.:Google APIs:23
+
+[maven_repositories]
+  central = https://repo1.maven.org/maven2

Example/.bundle/config

@@ -0,0 +1,2 @@
+BUNDLE_PATH: "vendor/bundle"
+BUNDLE_FORCE_RUBY_PLATFORM: 1

Example/.flowconfig

@@ -0,0 +1,66 @@
+[ignore]
+; We fork some components by platform
+.*/*[.]android.js
+
+; Ignore "BUCK" generated dirs
+<PROJECT_ROOT>/\.buckd/
+
+; Ignore polyfills
+node_modules/react-native/Libraries/polyfills/.*
+
+; Flow doesn't support platforms
+.*/Libraries/Utilities/LoadingView.js
+
+.*/node_modules/resolve/test/resolver/malformed_package_json/package\.json$
+
+[untyped]
+.*/node_modules/@react-native-community/cli/.*/.*
+
+[include]
+
+[libs]
+node_modules/react-native/interface.js
+node_modules/react-native/flow/
+
+[options]
+emoji=true
+
+exact_by_default=true
+
+format.bracket_spacing=false
+
+module.file_ext=.js
+module.file_ext=.json
+module.file_ext=.ios.js
+
+munge_underscores=true
+
+module.name_mapper='^react-native/\(.*\)$' -> '<PROJECT_ROOT>/node_modules/react-native/\1'
+module.name_mapper='^@?[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> '<PROJECT_ROOT>/node_modules/react-native/Libraries/Image/RelativeImageStub'
+
+suppress_type=$FlowIssue
+suppress_type=$FlowFixMe
+suppress_type=$FlowFixMeProps
+suppress_type=$FlowFixMeState
+
+[lints]
+sketchy-null-number=warn
+sketchy-null-mixed=warn
+sketchy-number=warn
+untyped-type-import=warn
+nonstrict-import=warn
+deprecated-type=warn
+unsafe-getters-setters=warn
+unnecessary-invariant=warn
+
+[strict]
+deprecated-type
+nonstrict-import
+sketchy-null
+unclear-type
+unsafe-getters-setters
+untyped-import
+untyped-type-import
+
+[version]
+^0.182.0

Example/.node-version

@@ -0,0 +1 @@
+16

Example/.ruby-version

@@ -0,0 +1 @@
+2.7.5

Example/Gemfile

@@ -0,0 +1,6 @@
+source 'https://rubygems.org'
+
+# You may use http://rbenv.org/ or https://rvm.io/ to install and use this version
+ruby '2.7.5'
+
+gem 'cocoapods', '~> 1.11', '>= 1.11.2'

Example/android/app/_BUCK

@@ -0,0 +1,55 @@
+# To learn about Buck see [Docs](https://buckbuild.com/).
+# To run your application with Buck:
+# - install Buck
+# - `npm start` - to start the packager
+# - `cd android`
+# - `keytool -genkey -v -keystore keystores/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"`
+# - `./gradlew :app:copyDownloadableDepsToLibs` - make all Gradle compile dependencies available to Buck
+# - `buck install -r android/app` - compile, install and run application
+#
+
+load(":build_defs.bzl", "create_aar_targets", "create_jar_targets")
+
+lib_deps = []
+
+create_aar_targets(glob(["libs/*.aar"]))
+
+create_jar_targets(glob(["libs/*.jar"]))
+
+android_library(
+    name = "all-libs",
+    exported_deps = lib_deps,
+)
+
+android_library(
+    name = "app-code",
+    srcs = glob([
+        "src/main/java/**/*.java",
+    ]),
+    deps = [
+        ":all-libs",
+        ":build_config",
+        ":res",
+    ],
+)
+
+android_build_config(
+    name = "build_config",
+    package = "com.swmansion.reanimated.example",
+)
+
+android_resource(
+    name = "res",
+    package = "com.swmansion.reanimated.example",
+    res = "src/main/res",
+)
+
+android_binary(
+    name = "app",
+    keystore = "//android/keystores:debug",
+    manifest = "src/main/AndroidManifest.xml",
+    package_type = "debug",
+    deps = [
+        ":app-code",
+    ],
+)