[ATR-28717] Initial refactor of trigger EDM toward R4

Initial part of the refactor

• Move recordable out of the R3 file and into a more central place.
  • Avoids unneeded run-dependence in signature configuration code
  • For now assuming R3, but maybe in the future we pass the flags here too
  • sed update the large number of importers of this function
• Move Alias and InViews structs to a new TrigEDMDefs file, for importing into the R3 and R4 files (cannot go into TrigEDM, circular dependencies)
• Add empty R4 file

Follow-up MRs will integrate the new R4 file, and do some additional refactoring for R3.

Limited testing so far due to large number of touched packages.

cc @cantel