Drop PHP 8.0 and add better support for newer PHP versions

What's Changed

• fix php8.4 deprecation by @ovgray in #13
• Deprecate 8.0 and tests for PHP 8.3, 8.4 & 8.5 by @reinder83 in #14

New Contributors

• @ovgray made their first contribution in #13

Full Changelog: v2.0...v2.0.1

Maintenance release PHP 8+

Drop support for older PHP versions, better support for PHP 8+ and typehinting

Minor fixes

• Moved $currentPos variable from trait to abstract class
• Update readme

Move interfaces from trait to abstract

• Moved the countable, iteratable and jsonserializable methods to the abstract method, so it doesn't interfere with other classes that use the trait instead of extending from the abstract class.
• Update Eloquent model example in readme

Add iterable, countable, and jsonSerializable

This release makes it possible iterate over the set flags, do a count() to return the number of set flags and add support to json_encode the BinaryFlags object

Add static methods

Add static method getAllFlags
Add static method getAllFlagsMask

checkAnyFlag

• Added checkAnyFlag method
• Minor readme updates

Final release

Updated unittests to have 100% code completion.

Version 0.5

Updated readme and Bits notation

Trait support

• Added Trait support
• Travis and CodeCoverage fixes