Renames + bug correction

[rprebet]

• Rename files/functions/types for curve parametrization to avoid confusion with parametric/rational curves. It consists mainly in swapping "rational" and "curve".
• Bug correction in the computation of zero-dim parametrization of fibers of the curves. This was not replacing non-generic fibers by new ones, as designed first.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 83.91%. Comparing base (8f34ae6) to head (9673dc4).
⚠️ Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
src/algorithms/curve-param.jl	90.90%	1 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #133      +/-   ##
==========================================
+ Coverage   83.59%   83.91%   +0.31%     
==========================================
  Files          26       32       +6     
  Lines        2768     3171     +403     
==========================================
+ Hits         2314     2661     +347     
- Misses        454      510      +56     

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[wegank]

Would it be advisable to keep rational_curve_parametrization as a temporary alias, with a deprecation warning saying that the function has been renamed to curve_rational_parametrization, to avoid immediately breaking existing external code?

[mohabsafey]

Very sorry to be slow on this. Since rational_curve_parametrization was quite recent and is not used yet in Oscar, I think we should go for the name change directly (precisely to avoid that this name is used). Otherwise, I am fine with this PR. @ederc , what do you think?