fix(core): Get hooks to work reliably with custom methods

[daffl]

This pull request fixes an issue where all hooks and application level hooks did not work with custom methods. The fix was to assemble the list of hooks dynamically during runtime instead of relying on the static store. This is slightly less performant but can probably be improved if need be.

• Closes [feathers dove] authentication does not work for custom methods #2708
• Closes Feathers dove custom methods are not registered on app-level and cannot be accessed using app hooks. #2697