Comment on SAMPLE.yaml base class

[budschi]

Please review and comment the SAMPLE.yaml base class. This includes also its subsections MATERIAL.yaml, SUBSTANCE.yaml

[budschi]

Where to place the amount of substance? (will be discussed in task force meeting 14.06.2022)

[budschi]

Should impurity and doping be treated differently? (intentional vs. unintentional)

[tomio13]

Just for the record: I believe we agreed that the used concentration and amount being defined at the usage of the base class in a given application definition (or other base classes), where it is a component of a sample.