Add JOSS paper draft to calibration module PR

[peanutfun]

Changes proposed in this PR:

• Add JOSS paper draft

This PR fixes #

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[chahank]

Suggested change

	def impact_function_tropical_cyclone(v_half: float, scale: float) -> ImpactFuncSet:
	def impact_function_tropical_cyclone(v_half: float, scale: float) -> ImpactFuncSet:

For the example, I would rather use the generic ImpactFunc.from_sigmoid_impf.

[peanutfun]

The code replicates the main part of the tutorial, and the plots are almost exactly the same. We can change it, but then it actually becomes harder to replicate the example. However, I could also change the tutorial to use from_sigmoid_impf.

[chahank]

I would do that. In part because the impact function for TC is quite particular, and in part because of the near-future plans to move TC to the petals repo.

[peanutfun]

I can then actually showcase a calibration with v_thresh, v_half and constraints!

[peanutfun]

@chahank Actually, the sigmoid implementation in from_sigmoid_impf is really not useful. It has no threshold parameter, meaning that you can easily create a function where mdr(0) != 0. It would be more useful to generalize the Emanuel-style sigmoid definition, as we did in the other paper. But this will also require the definition of a new function. So, for the sake of simplicity, I would keep everything as is.