[WIP] Add a service to allow retrieving collections to which an object belongs

[tmadlener]

BEGINRELEASENOTES

• Assign collection IDs when putting collections into the TES via Functional algorithms
• Add a CollectionFromObjectSvc that makes it possible to retrieve a collection to which an object belongs

ENDRELEASENOTES

This is the minimal solution for assigning collection ids on the fly when collections land in the TES (see also the discussion in #311). This implementation relies on currently available functionality from podio and has quite some potential for optimization (see below). However, that would require a new API in podio. The interface introduced in here should make it possible to hide that entirely, so that could be introduced at a later stage.

The current implementation instantiates a podio::CollectionIDTable, which internally creates two vectors, and a mutex. We need this because CollectionIDTable::add is the only way to get to a collection ID at the moment via publicly available functionality from podio. We could envisage functionality for just obtaining the collection ID without having to go through the setup of data structures that are immediately destroyed again. Especially, since this instantiation happens for every collection that is added to the TES.

• Needs Make it possible to get the collection for an object AIDASoft/podio#782

[tmadlener]

As a follow up to more discussions that we had, I have now changed this such that the details of the ObjectID are no longer exposed, rather there is a new serivce (CollectionFromObjectSvc; name still to be refined potentially) that allows to get the collection corresponding to an object if that collection has been registered with the TES. This is effectively the same functionality as implemented in AIDASoft/podio#782.

Currently, it is necessary to explicitly instantiate that service (similar to the MetadataSvc). We might want to consider making it easily possible to just instantiate the service on the fly or adding it to the serivces that we automatically add in our ApplicationMgr wrapper.

[tmadlener]

This could also be changed to something that works with podio 1.3, as this is not part of that tag.