RedisCluster alive keeping

• added redis cluster alive keeping
• internal classes refactor and movements

Simplifying the resetting flow

• ResettableEntityManager refactor, the basic resetting function is provided by the symfony/doctrine-bridge, current wrapper only ensures that injected doctrine repositories won't break
• added ability to exclude entity managers to get decorated by the resettable em

Entity manager reset through Symfony reset mechanism

• Entity manager reset through Symfony reset mechanism
• Terminators mechanism was removed

Min supported PHP version is 7.4

• min supported php version is 7.4
• min supported doctrine/orm version is 2.8
• min supported version of sensio/framework-extra-bundle is 6
• dev dependencies update

Composer - removed dependency on symfony/orm-pack

The dependency was removed to be able to have better control over Doctrine dependencies

Ability to update to symfony/orm-pack 2

Ability to update to symfony/orm-pack 2

Fix for doctrine bc layer

Fix for doctrine bc layer

Bumps symfony/http-kernel from 5.1.2 to 5.1.5.

Bumps symfony/http-kernel from 5.1.2 to 5.1.5.

Failover alive keeper doesn't break the application v2

Failover alive keeper doesn't break the application v2 - the alive keeper still needs to reconnect when the connection is closed

Failover alive keeper doesn't break the application

• Failover alive keeper doesn't break the application