Finite constructor parameter lifetimes

[Tamschi]

It's currently not possible to accept values with a lifetime shorter than 'static in constructor arguments that are captured.

It should be possible to specify any number of lifetime parameters on a component and use them with constructor arguments, including ones associated with a field capture.

Alternatively, accepting 'self may be an option, though supporting this exclusively may cause issues where variance isn't present.

[Tamschi]

This almost works now ('a should be able to be specified.), but acquiring a DI marker token from the type currently requires 'static lifetime.