change type param to TYPE instead of T for Julia

[kylebeggs]

I gave a little effort to trying to figure out how to scan the variable names and check if it clashes with this, but it was not obvious how to do that so for now this is at least a big improvement because a lot of these cell models use T as a variable.

[finsberg]

Hi @kylebeggs, looks good to me. Just need to update the unit tests :)

[codspeed-hq]

CodSpeed Performance Report

Merging #179 will not alter performance

_{Comparing kylebeggs:main (80e523a) with main (04a36e5)}

Summary

✅ 8 untouched benchmarks