online: Split STS hit finding and hit creation.

This is in preparation for the hit sorting.

added Online Reconstruction labels

assigned to @fweig

@fweig

This MR will need to be rebased locally as it seems to have some conflicts with the current master (button not shown)

Is this needed for !1598 (merged) ? If yes, should it be merged before the DC next week?

Also similar question as in !1598 (merged): do we need somebody to review this, as @v.friese will be gone next week?

This MR can be closed. Forgot about it. It's actually superseded by !1598 (merged).

Superseded by !1598 (merged). Closing.

closed