DPL AliECS: publish the channels known to DPL

Foundation: allow static reflection up to 40 elements

DPL: send metrics before processing

GPU: Fix race condition and incorrect implementation for creating bor…

…der tracks

FT0: Fix typo leading to a Geant4 warning

Fixes https://alice.its.cern.ch/jira/browse/O2-1510.
Thanks to @ihrivnac for spotting.

DPL Analysis: generalize dyn/aod matching (AliceO2Group#3809)

* DPL Analysis: generalize dyn/aod matching

* DPL Analysis: reduce dependence on type information for DYN creation

* Remove redundant template

* minor fix

* revert an incorrect change

Take a simpler test position for slats

DPL: improve ScopedExit (AliceO2Group#3798)

DPL: add error policy

By default one single error terminates the workflow when running in
batch mode. Use --error-policy=wait to wait.

By default one single error is reported but not fatal when running in
GUI mode. use --error-policy=quit to quit the whole workflow and
the GUI.

GPU: Fix GPU TRD Tracking