Use set!, zero!, etc. in YET more places

[fingolfin]

Also switch to Nemo.denominator! and Nemo.numerator!,
and remove add_two! which now is equivalent to add!(x, 2).

[codecov]

Codecov Report

Attention: Patch coverage is 97.36842% with 1 line in your changes missing coverage. Please review.

Project coverage is 75.90%. Comparing base (4ffee6e) to head (d26a6de).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/AlgAssAbsOrd/PIP/bley_johnston.jl	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1650      +/-   ##
==========================================
+ Coverage   75.81%   75.90%   +0.09%     
==========================================
  Files         361      361              
  Lines      113702   113687      -15     
==========================================
+ Hits        86200    86293      +93     
+ Misses      27502    27394     -108     

Files with missing lines	Coverage Δ
src/AlgAss/Elem.jl	88.54% <100.00%> (ø)
src/AlgAss/Map.jl	79.61% <100.00%> (ø)
src/Hecke.jl	51.61% <ø> (ø)
src/LinearAlgebra/LatEnum.jl	80.36% <100.00%> (ø)
src/Misc/CRT.jl	59.10% <100.00%> (+10.17%)	⬆️
src/Misc/Matrix.jl	76.87% <100.00%> (ø)
src/NumFieldOrd/NfOrd/Ideal/Arithmetic.jl	93.65% <100.00%> (ø)
src/NumFieldOrd/NfOrd/ResidueRing.jl	85.03% <100.00%> (-0.53%)	⬇️
src/QuadForm/Enumeration.jl	86.00% <100.00%> (+0.17%)	⬆️
src/AlgAssAbsOrd/PIP/bley_johnston.jl	66.16% <80.00%> (ø)

... and 27 files with indirect coverage changes

[thofma]

I guess some of the downstream tests changed their name?

[lgoettgens]

there just was another OscarDevTools.jl release that reverted this name change

[benlorenz]

there just was another OscarDevTools.jl release that reverted this name change

Yes, sorry about that, it was to fix the GLIBCXX errors for julia 1.6. But I realized too late that this changes all the names.
The change is not really necessary anyway since:

• github reverted the change for ubuntu-latest (from 22.04 to 24.04)
• I have made some new binaries which also avoids the error (at least for now)

Re-running the generatematrix step should create new jobs with ubuntu-latest as a name again.

[thofma]

Thanks @benlorenz