…ling HTTPS

Fixes #16

In order to create this fix, the ResourceController has been changed to extend the ServerController, so it has access to the ServerConfig.
The ServerConfig has a getAllowedOrigins method added that returns all allowed origins it is aware of.
In order to facilitate this, some cleanup was also needed for the ServerController.

As part of the PDS Interop-wide PHP project updates:

- Remove unneeded platform config
- Set minimum PHP version to PHP 7.3 (but lower than PHP8, see pdsinterop/php-solid-auth#19)
- Update package to more recent versions
- Contrain PDS Interop packages to version rather than dev-main
- Pin lcobucci/jwt to 3.3.3
- Pin PHPUnit to v8 and v9

- Whitespace fixes
- Move FQN to `use` statements
- Use PHP source functions instead of alias
- Collpase multi-if statements
- Inline function returns
- Remove commented out code

- Add divider comment between generic and specific sections
- Grab composer from official docker image rather than web
- Use a more robust shell
- Make apt-install footprint smaller
- Use OpenSSL with paths rather than use WORKDIR
- Make project path setable through env var for build purposes
- Only install non-dev dependencies with composer. The develop shoudl consciencely install deve dependencies because of develop PHP version(s) used.
- Use COPY rather than ADD as per best practices

Run latest versions of test suites

Cleanup for v0.6 release.