Improve Kotlin compatibility for SdkVersion class

[marandaneto]

📜 Description

Improve Kotlin compatibility for SdkVersion class

💡 Motivation and Context

getsentry/sentry-dart#287
Kotlin integrations will need to take care of null fields that are not null if not annotated

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

🔮 Next steps

[codecov-io]

Codecov Report

Merging #1213 (c12c942) into main (a32a612) will decrease coverage by 0.00%.
The diff coverage is 75.00%.

@@             Coverage Diff              @@
##               main    #1213      +/-   ##
============================================
- Coverage     74.57%   74.56%   -0.01%     
  Complexity     1713     1713              
============================================
  Files           177      177              
  Lines          6029     6040      +11     
  Branches        600      599       -1     
============================================
+ Hits           4496     4504       +8     
- Misses         1256     1262       +6     
+ Partials        277      274       -3     

Impacted Files	Coverage Δ	Complexity Δ
...in/java/io/sentry/SentryEnvelopeHeaderAdapter.java	77.77% <60.00%> (-1.30%)	18.00 <0.00> (ø)
...y/src/main/java/io/sentry/protocol/SdkVersion.java	68.57% <63.15%> (-13.25%)	10.00 <6.00> (+1.00)	⬇️
...rc/main/java/io/sentry/protocol/SentryPackage.java	57.14% <75.00%> (-20.64%)	4.00 <2.00> (-1.00)
...jul/src/main/java/io/sentry/jul/SentryHandler.java	73.10% <100.00%> (+1.20%)	31.00 <0.00> (ø)
...src/main/java/io/sentry/log4j2/SentryAppender.java	84.61% <100.00%> (+2.11%)	19.00 <0.00> (ø)
...rc/main/java/io/sentry/logback/SentryAppender.java	89.18% <100.00%> (+2.34%)	21.00 <0.00> (ø)
...io/sentry/spring/boot/SentryAutoConfiguration.java	97.95% <100.00%> (+3.84%)	1.00 <0.00> (ø)
...main/java/io/sentry/spring/SentryHubRegistrar.java	95.00% <100.00%> (+4.52%)	7.00 <0.00> (ø)
sentry/src/main/java/io/sentry/SentryOptions.java	84.64% <100.00%> (-0.06%)	115.00 <1.00> (ø)

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