Introduce ParametersCommon to factorize the relation between PatternTrackParameters and ParametersBase

Introduce ParametersCommon to factorize the relation between PatternTrackParameters and ParametersBase

The issue starts due to

class PatternTrackParameters final : public ParametersBase<5, Trk::Charged>{

but we have convertors

// Convertors
std::unique_ptr<ParametersBase<5, Trk::Charged>> convert(bool) const;
bool production(const ParametersBase<5, Trk::Charged>*);

PatternTrackParameters is not a kind of ParametersBase .

There are some common parts we should try to factorize thus the ParametersCommon

In principle if this succeeds we should follow up with a a bit of more cleanup.

ping @sroe