Daniel Carbone

This PR addresses #96. Highlights: 1. Utilize [PHP enum type](https://www.php.net/manual/en/language.types.enumerations.php) 2. Drop PHP 7 compatibility classes

Versions of PHP prior to 8.1 are no longer supported: https://www.php.net/supported-versions.php Attempting to maintain code compatibility with versions of PHP older than 8.0 is unfeasible at this time. I have...

Bumping build to 8.1.127, using go 1.22 base image.

Example here: https://github.com/dcarbone/php-fhir/actions/runs/8928798174/job/24525131738#step:11:66 When unserializing from an XML source, we need to track whether the type was found as an attribute value or a child element, possibly also allowing overrides.

Currently, the integration test suite queries fhir servers for resources each time a test is executed. It would be better if we cache these sources for a period of time....

Host Networking feature does not properly identity all ports to bind to Mac host

2

### Description Host Information: ``` System Version: macOS 12.7.5(21H1222) Machine Identifier: MacBookPro13,2 ``` I have a go binary that runs inside an Alpine container. When developing locally, this container must...