[stub builder] introduce a separate testsuite where classfiles generated by the K2 compiler

The result of k1/k2 should be similar here, the differences should be fixed by KT-60764

generators/analysis-api-generator/tests/org/jetbrains/kotlin/generators/tests/analysis/api/decompiled.kt

@@ -5,8 +5,11 @@
 
 package org.jetbrains.kotlin.generators.tests.analysis.api
 
+import org.jetbrains.kotlin.analysis.decompiler.psi.AbstractByDecompiledPsiStubBuilderK2CompilerTest
 import org.jetbrains.kotlin.analysis.decompiler.psi.AbstractByDecompiledPsiStubBuilderTest
+import org.jetbrains.kotlin.analysis.decompiler.stub.files.AbstractAdditionalStubInfoK2CompilerTest
 import org.jetbrains.kotlin.analysis.decompiler.stub.files.AbstractAdditionalStubInfoTest
+import org.jetbrains.kotlin.analysis.decompiler.stub.files.AbstractClsStubBuilderK2CompilerTest
 import org.jetbrains.kotlin.analysis.decompiler.stub.files.AbstractClsStubBuilderTest
 import org.jetbrains.kotlin.generators.TestGroupSuite
 
@@ -18,6 +21,10 @@ internal fun TestGroupSuite.generateDecompiledTests() {
         testClass<AbstractClsStubBuilderTest> {
             model("clsFileStubBuilder", extension = null, recursive = false)
         }
+
+        testClass<AbstractClsStubBuilderK2CompilerTest> {
+            model("clsFileStubBuilder", extension = null, recursive = false)
+        }
     }
 
     testGroup(
@@ -27,6 +34,10 @@ internal fun TestGroupSuite.generateDecompiledTests() {
         testClass<AbstractAdditionalStubInfoTest> {
             model("additionalClsStubInfo", extension = null, recursive = false)
         }
+
+        testClass<AbstractAdditionalStubInfoK2CompilerTest> {
+            model("additionalClsStubInfo", extension = null, recursive = false)
+        }
     }
 
     testGroup(
@@ -36,5 +47,9 @@ internal fun TestGroupSuite.generateDecompiledTests() {
         testClass<AbstractByDecompiledPsiStubBuilderTest> {
             model("clsFileStubBuilder", extension = null, recursive = false)
         }
+
+        testClass<AbstractByDecompiledPsiStubBuilderK2CompilerTest> {
+            model("clsFileStubBuilder", extension = null, recursive = false)
+        }
     }
 }