Refactor data import issue reporting

[vesameskanen]

Summary

Several improvements to data import issue reports:

• Sort issue types alphabetically
• Island pruning prefers to link with an OSM vertex sample
• Use records, not classes, for issues. This reduces boilerplate code significantly.
• Consistent issue structure: template strings are private, OSM links are generated the same way etc.

[codecov]

Codecov Report

Base: 61.88% // Head: 61.86% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (ba896bb) compared to base (78f763a).
Patch coverage: 43.67% of modified lines in pull request are covered.

Additional details and impacted files

@@              Coverage Diff              @@
##             dev-2.x    #4777      +/-   ##
=============================================
- Coverage      61.88%   61.86%   -0.03%     
- Complexity     12821    12825       +4     
=============================================
  Files           1619     1622       +3     
  Lines          64903    64850      -53     
  Branches        7071     7072       +1     
=============================================
- Hits           40168    40117      -51     
+ Misses         22460    22456       -4     
- Partials        2275     2277       +2     

Impacted Files	Coverage Δ
...r/ext/transferanalyzer/DirectTransferAnalyzer.java	0.00% <0.00%> (ø)
...analyzer/annotations/TransferCouldNotBeRouted.java	0.00% <0.00%> (ø)
...er/annotations/TransferRoutingDistanceTooLong.java	0.00% <0.00%> (ø)
...anner/graph_builder/issue/api/DataImportIssue.java	20.00% <ø> (ø)
...h_builder/issue/report/DataImportIssuesToHTML.java	0.00% <0.00%> (ø)
...anner/graph_builder/issues/AreaTooComplicated.java	0.00% <0.00%> (ø)
...aph_builder/issues/BogusShapeDistanceTraveled.java	0.00% <0.00%> (ø)
...anner/graph_builder/issues/BogusShapeGeometry.java	0.00% <0.00%> (ø)
...nner/graph_builder/issues/ConflictingBikeTags.java	0.00% <0.00%> (ø)
...nner/graph_builder/issues/InvalidGtfsTransfer.java	0.00% <0.00%> (ø)
... and 43 more

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[leonardehrenfried]

The Java code looks good - thanks!

If you could fix the indentation of the parameters list in the docs, I'm happy to approve.

[leonardehrenfried]

I just checked it. It looks good.