Support EnumValueType

[Lipen]

This PR adds EtsEnumValueType and supports its deserialization from JSONa (adds DTO, updates the converter).

[github-actions]

Test results on JDK 8

 72 files  ±0   72 suites  ±0   5m 4s ⏱️ +6s
633 tests ±0  620 ✅ ±0  13 💤 ±0  0 ❌ ±0 
705 runs  ±0  692 ✅ ±0  13 💤 ±0  0 ❌ ±0 

Results for commit a96cfa0. ± Comparison against base commit 126a4e8.

♻️ This comment has been updated with latest results.

[github-actions]

Test results on JDK 19

 72 files  ±0   72 suites  ±0   4m 52s ⏱️ -3s
633 tests ±0  623 ✅ ±0  10 💤 ±0  0 ❌ ±0 
705 runs  ±0  695 ✅ ±0  10 💤 ±0  0 ❌ ±0 

Results for commit a96cfa0. ± Comparison against base commit 126a4e8.

♻️ This comment has been updated with latest results.

[github-actions]

Lifecycle test results

78 tests  ±0   78 ✅ ±0   1m 30s ⏱️ +2s
 7 suites ±0    0 💤 ±0 
 7 files   ±0    0 ❌ ±0 

Results for commit a96cfa0. ± Comparison against base commit 126a4e8.

♻️ This comment has been updated with latest results.

[github-actions]

Test results on JDK 11

 72 files  ±0   72 suites  ±0   5m 29s ⏱️ -7s
633 tests ±0  625 ✅ ±0  8 💤 ±0  0 ❌ ±0 
705 runs  ±0  697 ✅ ±0  8 💤 ±0  0 ❌ ±0 

Results for commit a96cfa0. ± Comparison against base commit 126a4e8.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

Attention: Patch coverage is 43.75000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 70.58%. Comparing base (126a4e8) to head (db14b65).
Report is 1 commits behind head on neo.

Files with missing lines	Patch %	Lines
...b-ets/src/main/kotlin/org/jacodb/ets/model/Type.kt	37.50%	5 Missing ⚠️
...db-ets/src/main/kotlin/org/jacodb/ets/dto/Types.kt	40.00%	3 Missing ⚠️
...-ets/src/main/kotlin/org/jacodb/ets/dto/Convert.kt	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                neo     #321      +/-   ##
============================================
- Coverage     70.63%   70.58%   -0.05%     
+ Complexity     2460     2457       -3     
============================================
  Files           275      275              
  Lines         15268    15284      +16     
  Branches       2267     2269       +2     
============================================
+ Hits          10784    10788       +4     
- Misses         3569     3577       +8     
- Partials        915      919       +4     

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