Fix definitions of stored MySQL functions and naming in php-code

Fixes:

• fix names of command classes
• fix definitions of stored MySQL functions
  • add security characteristic
  • add characteristic about the nature of data use

Add backward compatibility with Symfony 5.4

Merge pull request #2 from Aeliot-Tm/upgrade-pipelines

Upgrade versions of actions

Base implementation

v1.0.0

Update documentation