[Common] Single-device, autodetecting-enabled event selection refactor

[ddobrigk]

• modularizes bc selection, event selection and luminosity task into subclasses. Further defines named ConfigurableGroup structs for simplicity / modularity. Classes and declarations are stored in EventSelectionTools.h.
• utilizes class modularity to create separate task structs for run 2 and run 3 with minimal code duplication and autodetect proper path using defineDataProcessing directives, effectively obsoleting processRun2 and processRun3 switches. Coupled with MC autodetect from metadata, no user selection is necessary, potentially simplifying hyperloop dependencies.
• as a consequence of the single-device rewrite, memory consumption went from ~350-400 MB to ~120 MB, potentially improving the probability of using fewer-core queues in grid processing.

Put here as a draft PR for a first discussion in the WP4+14 meeting on Monday the 16th June.

[github-actions]

O2 linter results: ❌ 22 errors, ⚠️ 0 warnings, 🔕 47 disabled

[ddobrigk]

Following the discussion in the WP4+14 meeting, this will now be merged for testing of the Run 2 / 3 autodetect at defineDataProcessing time in Hyperloop. @ekryshen has also suggested that the time stamp task could be merged with the event selection as it is essential in our preparation of events for analysis: this will be left for a future step (local code already exists in draft form).

[alibuild]

Auto-approving on behalf of @ddobrigk.