initial implementation, add prettier and eslint

Author: ruddell

.eslintrc.js

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+module.exports = {
+  env: {
+    browser: true,
+    es2021: true,
+  },
+  extends: [
+    'plugin:react/recommended',
+    'airbnb-base',
+    'plugin:prettier/recommended',
+  ],
+  parserOptions: {
+    ecmaFeatures: {
+      jsx: true,
+    },
+    ecmaVersion: 12,
+    sourceType: 'module',
+  },
+  plugins: ['react'],
+  rules: {
+    'prettier/prettier': 'error',
+    'react/prop-types': 'off',
+  },
+  settings: {
+    react: {
+      version: 'detect',
+    },
+  },
+};

.gitignore

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+node_modules

.prettierignore

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+package-lock.json

.prettierrc.js

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+module.exports = {
+  bracketSpacing: true,
+  jsxBracketSameLine: true,
+  singleQuote: true,
+  trailingComma: 'all',
+};

README.md

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+# react-native-webrtc-web-shim
+
+> Add WebRTC support for `react-native-web`, with minimal changes to your existing React Native app.
+
+## Requirements
+
+This library assumes you have an existing `react-native` application using `react-native-webrtc`.
+
+## Installation
+
+Install via `npm` or `yarn`
+
+```bash
+npm install react-native-webrtc-web-shim
+```
+
+## Setup
+
+### Replace Imports
+
+Replace the import statement of `react-native-webrtc` to import from `react-native-webrtc-web-shim` instead.
+
+```javascript
+-import { RTCPeerConnection } from 'react-native-webrtc';
++import { RTCPeerConnection } from 'react-native-webrtc-web-shim';
+
+```
+
+### Change WebRTC Code
+
+#### RTCView
+
+When displaying the `RTCView` component, pass it the `stream` object as a prop instead of `streamURL`.
+
+```javascript
+<RTCView
+  -streamURL={stream.toURL()}
+  +stream={stream}
+/>
+```
+
+#### Track Listener
+
+Add an `ontrack` listener to your `RTCPeerConnection` object, similar to the `onaddstream` listener.
+
+```javascript
+webRtcPeer.onaddstream = async ({ stream }) =>
+  await addVideo(sessionId, stream);
+// add an ontrack listener for Safari support
+webRtcPeer.ontrack = async ({ track, streams }) => {
+  if (track.kind === 'video') {
+    await addVideo(sessionId, streams[0]);
+  }
+};
+```