Additional ContainerStatus values for VMXi sample handling

As part of https://jira.diamond.ac.uk/browse/VMXI-1056, it will be necessary to create additional PlateStatus and consequently `ContainerStatus` values to represent separate travel to the load lock in both directions.

The status values that I would like are:

`IN_TRANSIT_TO_LOADLOCK_FROM_HOTEL`
`IN_TRANSIT_TO_LOADLOCK_FROM_LOCAL_STORAGE`

`IN_TRANSIT_TO_LOADLOCK` can be deprecated - until the new code is stable it would be good to retain it.

Also missing is an existing value already used in GDA `ON_GONIO` which has string value "on_gonio"

If there is any additional logic in the database layer it may have to be updated to account for the new values; I am not aware of any but it may be worth checking.

Search the Java sources for ContainerStatus and PlateStatus, then inspect any database-layer handling of their values. Confirm the two new load-lock statuses and the existing ON_GONIO value, retain IN_TRANSIT_TO_LOADLOCK for compatibility, and verify that all relevant persistence paths accept the new values.

Written by the indexing model from the issue text.