Add InputRange... classes as a replacement for cppcoro::generator

[joka921]

The new classes (called InputRange...) and their requirements can be found in src/util/iterators.h. They can be used to replace our many uses of cppcoro::generator.

For an example, see src/engine/Result.h, where using LazyResult = ad_utility::InputRangeTypeErased<IdTableVocabPair> is defined as a replacement for using Generator = cppcoro::generator<IdTableVocabPair>, and the many places where now LazyResult is used instead of Generator.

Other replacements will take a little more work.

[codecov]

Codecov Report

Attention: Patch coverage is 91.81818% with 9 lines in your changes missing coverage. Please review.

Project coverage is 89.86%. Comparing base (4237e0d) to head (91e6523).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
src/util/Iterators.h	87.69%	5 Missing and 3 partials ⚠️
src/util/Views.h	97.05%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1678      +/-   ##
==========================================
+ Coverage   89.69%   89.86%   +0.16%     
==========================================
  Files         385      389       +4     
  Lines       36955    37268     +313     
  Branches     4179     4201      +22     
==========================================
+ Hits        33148    33492     +344     
+ Misses       2507     2479      -28     
+ Partials     1300     1297       -3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[hannahbast]

This is fantastic and looks ready to merge now (assuming that the tests run through)

[sparql-conformance]

Conformance check passed ✅

No test result changes.

Details: https://qlever.cs.uni-freiburg.de/sparql-conformance-ui?cur=91e6523fd531454f27c7d1aebf1f29dcbeb2e83a&prev=6429061bc09aeb95f42be2d3850def99ef8a969c

[sonarqubecloud]

Quality Gate passed

Issues
6 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud