feat: Add support for named variables in IEnvironment

The code changes introduce support for named variables in the IEnvironment interface. This is achieved by adding two new methods: SetVariable to set the value of a named variable, and GetVariable to retrieve the value of a named variable if it exists. The ParameterType is added to include the necessary types for the variables.

Resolves #75 (closed)

The program was tested solely for our own use cases, which might differ from yours.

Martin Stump martin.stump@mercedes-benz.com on behalf of Mercedes-Benz Tech Innovation GmbH, Provider Information