Add optional seeding layer skip to default velo algorithm
This MR adds a new option to the Velo Algorithm (SeedingWindow). This parameter allows to skip layers in the seeding step of the tracking.
Default value is 3, it is the same as the current algorithm (no skip).
If we increase to 4, it does the following combinations:
xxx.
xx.x
x.xx
If we increase to 5:
xxx..
xx.x.
x.xx.
xx..x
x.x.x
x..xx
And so on..
This MR brings closer the Full and Default versions. From there, very little work would be needed to have only one version that is completely configurable through properties, but this can probably done in a follow up MR.