java stab of class file generator

This is for a workaround of KT-24309.

How to use

As a Gradle Library

1. add com.anatawa12.java-stab-gen:gradle-library:1.0.0 to buildscript depencencies.

   kotlin

   ```groovy buildscript { repositories { mavenCentral() } dependencies { classpath("com.anatawa12.java-stab-gen:gradle-library:1.0.0") } } ```
   groovy

   ```groovy buildscript { repositories { mavenCentral() } dependencies { classpath "com.anatawa12.java-stab-gen:gradle-library:1.0.0" } } ```

2. create task with type com.anatawa12.javaStabGen.gradle.ClassesGenerator

   kotlin

   import com.anatawa12.javaStabGen.gradle.GenerateJavaStab
   
   val generateJavaStab by tasks.creating(GenerateJavaStab::class) {
       generatedDir = file("$buildDir/generated/stab")
       classpath = classpath_you_want_to_generate_stab_for
   }
   groovy

   import com.anatawa12.javaStabGen.gradle.GenerateJavaStab
   task generateJavaStab(type: GenerateJavaStab) {
       generatedDir = file("$buildDir/generated/stab")
       classpath = classpath_you_want_to_generate_stab_for
   }

Examples

Workaround of KT-24309

import com.anatawa12.javaStabGen.gradle.GenerateJavaStab

def theLibraryDependsThisProject = TODO

// generate stab for $theLibraryDependsThisProject
// into "$buildDir/generated/stab"
task generateJavaStab(type: GenerateJavaStab) {
   generatedDir = file("$buildDir/generated/stab")
   classpath = files(theLibraryDependsThisProject)
}
compileKotlin {
   dependsOn(generateJavaStab)
   // add and include generateJavaStab.generatedDir as java source code
   source(generateJavaStab.generatedDir)
   include("**/*.java")
}