ruleset.c: Separate loading action enabler sections
Split from #41572.
Separate loading of action enabler sections from load_ruleset_game() to a new function. This new function should not care which file the action enablers actually are - it should be usable both for loading them from game.ruleset (as we currently do, and will do in compat mode for the lifetime of freeciv-3.2) and for loading them from the new actions.ruleset.
as soon as the patch merges i will move the actions section and the action enabler sections but should the autoattack section be moved together from the game.ruleset loading?
my opinion is that they should, as it actually is the auto action performer for attacks and we possibly can or will extend them to other actions. so in actions.ruleset we would have auto action performers, actions configuration and action enablers