exclude example app from the published package

[Simek]

Description

While working on adding a new metadata information to the React Native Directory, and analysing the results, I have spotted that react-native-orientation-locker published package includes example apps files, which increase significantly the final bundle size, see:

• https://www.npmjs.com/package/react-native-orientation-locker?activeTab=code

To avoid that, I have updated the .npmignore file, and added exclusion for the example directory.

Test plan

I have run the npm pack --dry-run command before and after the changes, and make sure that tests file are no longer a part of the final bundle.

Results are as follows, before the change:

npm notice filename: react-native-orientation-locker-1.7.0.tgz
npm notice package size: 244.5 kB
npm notice unpacked size: 499.6 kB
npm notice shasum: 2f9a234f560b533f735be065e6164e098d375dda
npm notice integrity: sha512-6zV/lCjtzcsH/[...]RqdZmiUXWwg9w==
npm notice total files: 129

After excluding example files:

npm notice filename: react-native-orientation-locker-1.7.0.tgz
npm notice package size: 26.2 kB
npm notice unpacked size: 128.0 kB
npm notice shasum: d9cf697245bcca29b0f0ae7cd2ff470fbc3a380b
npm notice integrity: sha512-WmHoDcm3usAiZ[...]4294YjMeWwfnA==
npm notice total files: 42