Convert tutorials and debugging examples to use lbexec

Chris Burrrequested to merge
cburr/lbexec-conversion into master

Draft for now as it requires LHCb!3618 (merged) for the tests to pass.

The tupling part of DaVinciExamples still needs to be done but I think there is enough here to justify reviewing.

Work related to DPA task https://gitlab.cern.ch/lhcb-dpa/project/-/issues/102.

Edited by Eduardo Rodrigues

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