nhr-loader: add dedicated NHRException, use in service

[puckipedia]

Als een ongeldig KVK nummer gebruikt wordt, wordt deze nu voor eeuwig opnieuw geprobeerd. Deze PR zorgt ervoor dat de foutmeldingen van de KVK API correct teruggestuurd worden, en dat de requests niet opnieuw geprobeerd worden op ongeldige/onbekende KVK nummers.

[codecov]

Codecov Report

Merging #1411 (5eba9f8) into master (a96af32) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff            @@
##             master    #1411   +/-   ##
=========================================
  Coverage     35.54%   35.54%           
  Complexity      809      809           
=========================================
  Files           410      410           
  Lines         19160    19171   +11     
  Branches       1912     1914    +2     
=========================================
+ Hits           6811     6815    +4     
- Misses        11738    11747    +9     
+ Partials        611      609    -2     

Impacted Files	Coverage Δ
...src/main/java/nl/b3p/brmo/service/jobs/NHRJob.java	0.00% <0.00%> (ø)
...nl/b3p/brmo/util/http/HttpSeekableByteChannel.java	69.87% <0.00%> (+1.20%)	⬆️
...nl/b3p/brmo/bgt/download/api/DownloadApiUtils.java	76.47% <0.00%> (+8.82%)	⬆️

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