Kotlin compile args

[casid]

This should fix #293.

Ideally, this would pick up the required JDK version from the project configuration (like maven does this for Java), but I have no idea how to do that for Kotlin.

For now, this would need to be added to the precompile task:

jte {
    precompile()
    kotlinCompileArgs.set(arrayOf("-jvm-target", "17"))
}

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (dd8b9f5) 91.22% compared to head (40b0356) 91.21%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #294      +/-   ##
============================================
- Coverage     91.22%   91.21%   -0.01%     
- Complexity     1193     1197       +4     
============================================
  Files            76       76              
  Lines          3123     3132       +9     
  Branches        482      484       +2     
============================================
+ Hits           2849     2857       +8     
  Misses          167      167              
- Partials        107      108       +1     

Files	Coverage Δ
...e-runtime/src/main/java/gg/jte/TemplateConfig.java	100.00% <ø> (ø)
...e-runtime/src/main/java/gg/jte/TemplateEngine.java	94.11% <100.00%> (+0.10%)	⬆️
...va/gg/jte/compiler/kotlin/KotlinClassCompiler.java	82.35% <85.71%> (+0.53%)	⬆️

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