Added a composer.json to enable support for PIE

[asgrim]

Adds support for PIE.

Once merged, a maintainer would need to add this repo's URL to https://packagist.org/packages/submit :)

More info/documentation can be read on: https://github.com/php/pie/blob/main/docs/extension-maintainers.md

[remicollet]

Be aware of composer/packagist#1496

If needed, I will able to add it under pecl vendor, and switch maintainer

[bd808]

Be aware of composer/packagist#1496

If needed, I will able to add it under pecl vendor, and switch maintainer

@remicollet I have landed the patch, so you should now be able to register the package at Packagist. My Packagist username is bd808, and I would appreciate being added as a co-maintainer.

[remicollet]

@bd808: package created https://packagist.org/packages/pecl/yaml

You are the maintainer (I have removed myself)

[bd808]

You are the maintainer (I have removed myself)

Thanks @remicollet