feat: add group limit to explorer api

[aaron-steinfeld]

Description

Expose optional group limit api parameter for explorer

Testing

Verified behavior E2E

[codecov]

Codecov Report

Merging #76 (7a79113) into main (28b7af5) will decrease coverage by 0.39%.
The diff coverage is 69.23%.

@@             Coverage Diff              @@
##               main      #76      +/-   ##
============================================
- Coverage     22.69%   22.29%   -0.40%     
  Complexity       66       66              
============================================
  Files            64       64              
  Lines          1586     1583       -3     
  Branches         49       49              
============================================
- Hits            360      353       -7     
- Misses         1219     1223       +4     
  Partials          7        7              

Flag	Coverage Δ	Complexity Δ
unit	22.29% <69.23%> (-0.40%)	0.00 <0.00> (ø)

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Impacted Files	Coverage Δ	Complexity Δ
...lorer/dao/GatewayServiceExploreRequestBuilder.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...lization/GroupByArgumentDeserializationConfig.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...explorer/request/DefaultExploreRequestBuilder.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...ce/graphql/spaces/dao/ExplorerBackedSpacesDao.java	89.04% <100.00%> (-0.96%)	7.00 <0.00> (ø)

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[github-actions]

Unit Test Results

10 files  ±0  10 suites  ±0   17s ⏱️ +4s
20 tests ±0  20 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 94bfc30. ± Comparison against base commit 28b7af5.