Fix: Improved examples and added other features/fixes

[ZarmDev]

My first PR

Description

• Fixes "Map > Style JSON (currently relies on a Mapbox-hosted population tile set)" 12
• Fixes errors when running npm install in the examples folder by using latest versions.
• Fixes errors when running app by using local examples folder.
• Adds usage of openstreetmap instead of vector tiles
• Adds image overlay of NYC (copyright free don't worry - https://commons.wikimedia.org/wiki/File:New_York_City_Greater_NY_US_street_map.svg)
• Added README.md file in expo-app folder and examples folder
• Added note that OpenStreetMap data CAN be used (because I came to this library for that reason)
• Fixed broken examples folder link in the GETTINGSTARTED.md file

Notes

One issue I encountered is that in the original code, it does:

import { sheet, colors } from '@maplibre-react-native/examples';
import { default as Home } from '@maplibre-react-native/examples/src/scenes/Examples';
import { IS_ANDROID } from '@maplibre-react-native/examples/src/utils';

I changed it to

import { sheet, colors } from '../examples';
import { default as Home } from '../examples/src/scenes/Examples';
import { IS_ANDROID } from '../examples/src/utils';

The problem is, I don't know if it actually will work because when I cloned the repo, I just moved the examples folder into the expo-app folder so it would all be built together. So:

1. When I did it with the examples folder in the expo-app folder, everything worked fine. This code should work, but I can't guarantee the code works because I'm too lazy to run npx eas build again but I will try to test it later this week (busy 🫤)
2. I did not test for other platforms.

Checklist

• [ ] I have tested this on a device/simulator for each compatible OS
• [ ] I formatted JS and TS files with running yarn lint:fix in the root folder Got error ESLint couldn't find an eslint.config.(js|mjs|cjs) file.
• [ ] I have run tests via yarn test in the root folder Got error ESLint couldn't find an eslint.config.(js|mjs|cjs) file.
• [ ] I updated the documentation with running yarn generate in the root folder Error: YAMLException: duplicated mapping key at line 5, column 1: enableGlobalCache: true
• [X] I mentioned this change in CHANGELOG.md
• [ ] I updated the typings files (index.d.ts) Should be no need?
• [X] I added/updated a sample (/example)