refactor(test): add line comments to related classes and current class

Add line comments to the related classes and current class in the TestCodeGenTask.kt file. This is done by retrieving the line comment prefix for the file's language and using it to format the comments. The related classes are preceded by the comment "// here are related classes:", and the current class is preceded by the comment "// here is current class information:". The comments are added to the prompter string.

src/main/kotlin/cc/unitmesh/devti/intentions/action/task/TestCodeGenTask.kt

@@ -10,6 +10,7 @@ import cc.unitmesh.devti.provider.WriteTestService
 import cc.unitmesh.devti.provider.context.*
 import cc.unitmesh.devti.statusbar.AutoDevStatus
 import cc.unitmesh.devti.statusbar.AutoDevStatusService
+import com.intellij.lang.LanguageCommenters
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.ReadAction
 import com.intellij.openapi.application.runReadAction
@@ -32,6 +33,9 @@ class TestCodeGenTask(val request: TestCodeGenRequest) :
     private val lang = request.file.language.displayName
     private val writeTestService = WriteTestService.context(request.element)
 
+    val commenter = LanguageCommenters.INSTANCE.forLanguage(request.file.language) ?: null
+    val comment = commenter?.lineCommentPrefix ?: "//"
+
     override fun run(indicator: ProgressIndicator) {
         indicator.isIndeterminate = true
         indicator.fraction = 0.1
@@ -76,21 +80,21 @@ class TestCodeGenTask(val request: TestCodeGenRequest) :
             val relatedClasses = testContext.relatedClasses.joinToString("\n") {
                 it.format()
             }.lines().joinToString("\n") {
-                "// $it"
+                "$comment $it"
             }
 
-            "// here are related classes:\n$relatedClasses\n"
+            "$comment here are related classes:\n$relatedClasses\n"
         }
 
         if (testContext.currentClass != null) {
             val currentClassInfo = runReadAction { testContext.currentClass.format() }.lines().joinToString("\n") {
-                "// $it"
+                "$comment $it"
             }
-            prompter += "\n// here is current class information:\n$currentClassInfo\n"
+            prompter += "\n$comment here is current class information:\n$currentClassInfo\n"
         }
 
         val importString = testContext.imports.joinToString("\n") {
-            "// $it"
+            "$comment $it"
         }
 
         prompter += "\nCode:\n$importString\n```${lang.lowercase()}\n${request.selectText}\n```\n"