move DI stuff for paychmgr into modules

[whyrusleeping]

This makes it easier to use the paychmgr package outside of lotus.

[whyrusleeping]

I need one or two more things here... the paych manager thing still depends on some funky fx nonsense. manageAPIImpl is an unexported struct that requires an embedded other type thats fulfilled via the constructor with a magic fx.In PaychAPI struct (not interface).

This needs some untangling...

[whyrusleeping]

@magik6k youre gonna have to take a look at that last commit, I dont think I really understand what I was doing there with the dependency injection.

[magik6k]

Just needed to use the magic From, the difference it makes is that if you pass a non-function value as the second param to Override, it just gets put into the DI container.

The From will instead wrap it into a function returning the value, so it is pulled from DI (From(*T) -> func(t T) T {return t}) - which in case of structs with fx.In means that all the fields internal to the struct will get pulled from DI (and without the From they will just be nil)

(This should be better documented)

[whyrusleeping]

Aha! that makes sense, thanks :)