[FTheoryTools] First version of enumeration of g4-fluxes code

[HereAround]

Latest state of my code to enumerate g4-fluxes. As of right now, I just copied the file here - to be integrate/improved etc. Hence WIP of WIP.

cc @apturner @emikelsons

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 189 lines in your changes missing coverage. Please review.

Project coverage is 84.41%. Comparing base (8451da1) to head (f045381).
Report is 103 commits behind head on master.

Files with missing lines	Patch %	Lines
...FTheoryTools/src/G4Fluxes/enumeration_of_fluxes.jl	0.00%	189 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4215      +/-   ##
==========================================
- Coverage   84.60%   84.41%   -0.20%     
==========================================
  Files         631      632       +1     
  Lines       84915    85104     +189     
==========================================
- Hits        71842    71840       -2     
- Misses      13073    13264     +191     

Files with missing lines	Coverage Δ
...FTheoryTools/src/G4Fluxes/enumeration_of_fluxes.jl	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

[HereAround]

This material - or rather its massively improved counterpart - has been integrated into OSCAR in #4286. Therefore, I close this draft.