844: handle inf/nan as special constants

[al-niessner]

🗒️ Summary

Add the ability to use inf/nan for special constants. Does not in include #893 nor was any test data given.

⚙️ Test Data and/or Report

Automated unit/regression test below

Given test data size, here is validate after patch:

PDS Validate Tool Report

Configuration:
   Version     3.5.0-SNAPSHOT
   Date        2024-05-13T16:53:16Z

Parameters:
   Targets                      [file:/home/niessner/Projects/PDS/validate/src/test/resources/github844/MDIS_RTM_N01_010599_7521824_1.xml]
   Severity Level               WARNING
   Recurse Directories          true
   File Filters Used            [*.xml, *.XML]
   Data Content Validation      on
   Product Level Validation     on
   Max Errors                   100000
   Registered Contexts File     /home/niessner/Projects/PDS/validate/target/classes/util/registered_context_products.json

Product Level Validation Results

  PASS: file:/home/niessner/Projects/PDS/validate/src/test/resources/github844/MDIS_RTM_N01_010599_7521824_1.xml
        1 product validation(s) completed

Summary:

  1 product(s)
  0 error(s)
  0 warning(s)

  Product Validation Summary:
    1          product(s) passed
    0          product(s) failed
    0          product(s) skipped
    1          product(s) total

  Referential Integrity Check Summary:
    0          check(s) passed
    0          check(s) failed
    0          check(s) skipped
    0          check(s) total


End of Report
Completed execution in 18477 ms

♻️ Related Issues

Closes #844