Secsgem

Refactor to work with multiple protocols/communication layers
Add SECS-I protocol/communication

Refactor to work with multiple protocols/communication layers
Add SECS-I protocol/communication

* Rename class HsmsHandler to HsmsProtocol
* Add base classes for protocol layer (HSMS)
* Add type hints for some classes/functions
* Rename some camel-case instance attributes to snake-case (for pep style guide compliance)
* Make some instance attributes private with properties for read-only access
* Raise linter level and fix corresponding linter warnings

* Secs-/GemHandler are not based on HsmsHandler any more
* Secs-/GemHandler require a connection to be passed to constructor
* Secs-/GemHandler have a class method named `hsms` to access the old functionality
* Data items and functions are now generated from a yaml file to reduce redundant boilerplate text/code

Test new refactorings and release pipeline

Refactorings for code improvements

!! This breaks the old API !!