Moving naming tracking into Jim class from Prior class

[kazewong]

Currently tracking the naming of parameters is done within the prior class, which limits the flexibility and legibility of parameters within Jim.

It is probably more ergonomic to define parameters and track their naming within Jim, and specify transform only at the interface with the likelihood object and prior object.

This should solve the problem specified in #89 .

[thomasckng]

This should fix the problem in #81 as long as all the prior are sample from the unconstrained uniform. nanargmin in the line below should be changed back to argmin after the implementation.

jim/src/jimgw/single_event/likelihood.py

Line 562 in 2a51d8c

best_fit = optimized_positions[jnp.nanargmin(summary["final_log_prob"])]