Restructure project and update build workflows

Reorganized Android and iOS source directories, updated package and configuration files, and replaced legacy GitHub Actions workflows with new, more focused build and release workflows. Removed old configuration, template, and lock files, and migrated Android and iOS package code to new namespaces. Added new example app setup and updated build scripts for improved maintainability.

Author: mCodex

.editorconfig

@@ -0,0 +1,56 @@
+version: 2
+enable-beta-ecosystems: true
+updates:
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'daily'
+    labels:
+      - 'dependencies'
+
+  - package-ecosystem: 'gradle'
+    directories:
+      - '/android/'
+      - '/example/android/'
+    schedule:
+      interval: 'daily'
+    labels:
+      - 'nitro-core'
+      - 'nitrogen'
+      - 'dependencies'
+      - 'kotlin'
+
+  - package-ecosystem: 'bundler'
+    directory: '/example/'
+    schedule:
+      interval: 'daily'
+    labels:
+      - 'dependencies'
+      - 'ruby'
+
+  - package-ecosystem: 'npm'
+    directories:
+      - '/example/'
+      - '/'
+    schedule:
+      interval: 'daily'
+    labels:
+      - 'nitro-core'
+      - 'dependencies'
+      - 'typescript'
+      - 'nitrogen'
+
+    groups:
+      react-native-cli:
+        patterns:
+          - '@react-native-community/cli*'
+      babel:
+        patterns:
+          - '@babel/*'
+      react-native:
+        patterns:
+          - '@react-native/*'
+      nitro:
+        patterns:
+          - 'nitrogen'
+          - 'react-native-nitro-modules'

.gitattributes

@@ -0,0 +1,79 @@
+name: Build Android
+
+permissions:
+  contents: read
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '.github/workflows/android-build.yml'
+      - 'example/android/**'
+      - 'nitrogen/generated/shared/**'
+      - 'nitrogen/generated/android/**'
+      - 'cpp/**'
+      - 'android/**'
+      - '**/bun.lock'
+      - '**/react-native.config.js'
+      - '**/nitro.json'
+  pull_request:
+    paths:
+      - '.github/workflows/android-build.yml'
+      - 'example/android/**'
+      - '**/nitrogen/generated/shared/**'
+      - '**/nitrogen/generated/android/**'
+      - 'cpp/**'
+      - 'android/**'
+      - '**/bun.lock'
+      - '**/react-native.config.js'
+      - '**/nitro.json'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build Android Example App (${{ matrix.arch }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [new, old]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies (bun)
+        run: bun install
+
+      - name: Disable new architecture in gradle.properties
+        if: matrix.arch == 'old'
+        run: sed -i "s/newArchEnabled=true/newArchEnabled=false/g" example/android/gradle.properties
+
+      - name: Setup JDK 17
+        uses: actions/setup-java@v5
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+          cache: 'gradle'
+
+      - name: Cache Gradle
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('example/android/**/*.gradle*') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Run Gradle build
+        working-directory: example/android
+        run: ./gradlew assembleDebug --no-daemon --build-cache
+
+      - name: Stop Gradle daemon
+        working-directory: example/android
+        run: ./gradlew --stop