Version 1.9.0

Changelog:

• switch to github actions
• fix endless recursion in to array
• add compatibility with php8
• implement filters (see https://tflori.github.io/orm/filters.html)
• implement morphed relations (see https://tflori.github.io/orm/relationDefinition.html#morphed-relation-1)
• implement eager loading of relations from entities and fetchers (see https://tflori.github.io/orm/relations.html#eager-loading-of-relations)
• implement boot method for entities and traits (just overwrite https://tflori.github.io/orm/reference.html#ormentityboot)
• allow using query builder from entity manager (see https://tflori.github.io/orm/querybuilder.html)
• add parent children relation with build tree method (see https://tflori.github.io/orm/relationDefinition.html#the-parent-children-relation)
• add method to reset loaded relations: Entity::resetRelated(?string)
• implement methods for fetching, updating, inserting and deleting in query builder
• wrap count query instead of modifying select clause
• implement a simulation of nested transaction with savepoints
• allow to add columns to entity fetchers