Update to network version of PoPS Core

[wenzeslaus]

• Updates core code to the latest with network (and dynamic kernels).
• Add network to pops_model function interface.
• Rewrite pops_model_cpp interface to fit into the 65 parameter limit (rewritten just to make it work, but not to resolve the problem once and for all).
• Higher-level functions don't have network added yet.
• There is no new test for the network (and the actual use of network is untested).
• Some tests fail with seemingly unrelated changes, but some are rightly flagging the outdated autogenerated documentation.

[codecov[bot]]

Codecov Report

Merging #131 (d6d17ce) into main (62d9191) will decrease coverage by 0.75%. The diff coverage is 78.19%.

:exclamation: Current head d6d17ce differs from pull request most recent head ded2619. Consider uploading reports for the commit ded2619 to get more accurate results

@@            Coverage Diff             @@
##             main     #131      +/-   ##
==========================================
- Coverage   83.82%   83.06%   -0.76%     
==========================================
  Files          40       46       +6     
  Lines        5031     5332     +301     
==========================================
+ Hits         4217     4429     +212     
- Misses        814      903      +89     

Impacted Files	Coverage Δ
R/auto_manage.R	0.00% <0.00%> (ø)
R/helpers.R	87.76% <ø> (ø)
inst/include/deterministic_kernel.hpp	82.05% <0.00%> (-3.67%)	:arrow_down:
inst/include/neighbor_kernel.hpp	6.06% <0.00%> (-1.35%)	:arrow_down:
inst/include/scheduling.hpp	87.83% <0.00%> (-1.36%)	:arrow_down:
inst/include/treatments.hpp	90.47% <ø> (-0.26%)	:arrow_down:
inst/include/uniform_kernel.hpp	69.23% <0.00%> (-30.77%)	:arrow_down:
inst/include/utils.hpp	62.50% <61.76%> (-1.79%)	:arrow_down:
inst/include/network.hpp	65.64% <65.64%> (ø)
inst/include/switch_kernel.hpp	77.77% <66.66%> (-15.98%)	:arrow_down:
... and 34 more

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