Timer and TimerComponent APIs are inconsistent

Taking a look at Timer and TimerComponent, I realized they have a different nomenclature on their APIs:

On [TimerComponent](https://github.com/flame-engine/flame/blob/main/packages/flame/lib/src/components/timer_component.dart#L20), the length/duration of the timer is called `period` and it is a named parameter. That is a good name for when repeat is true.

But on the underlying [Timer](https://github.com/flame-engine/flame/blob/main/packages/flame/lib/src/timer.dart#L13) implementation, it is actually called `limit` and it is not a named parameter. That name feels better for non-repeating timers.

-> I do not have a strong preference for the parameter name, but I think it should be consistent.
-> I think whether it is named-parameter or not should also be consistent - but I do tend to prefer the named-parameter on this matter, as it is more readable from the call site.

Thoughts? I can happily update one or the other depending on everyone's preferences.
It is a breaking change, but I think keeping them consistent is very important to keep simplicity and avoid confusion for our users (for example when changing code from one to the other).