[FIR] Implement OUTER_CLASS_ARGUMENTS_REQUIRED diagnostics

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -1349,6 +1349,13 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.OUTER_CLASS_ARGUMENTS_REQUIRED) { firDiagnostic ->
+        OuterClassArgumentsRequiredImpl(
+            firSymbolBuilder.classifierBuilder.buildClassLikeSymbol(firDiagnostic.a) as KtNamedClassOrObjectSymbol,
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.TYPE_PARAMETERS_IN_OBJECT) { firDiagnostic ->
         TypeParametersInObjectImpl(
             firDiagnostic as FirPsiDiagnostic,

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -956,6 +956,11 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         abstract val classifier: KtClassLikeSymbol
     }
 
+    abstract class OuterClassArgumentsRequired : KtFirDiagnostic<PsiElement>() {
+        override val diagnosticClass get() = OuterClassArgumentsRequired::class
+        abstract val outer: KtNamedClassOrObjectSymbol
+    }
+
     abstract class TypeParametersInObject : KtFirDiagnostic<PsiElement>() {
         override val diagnosticClass get() = TypeParametersInObject::class
     }

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -1536,6 +1536,14 @@ internal class NoTypeArgumentsOnRhsImpl(
     override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
 }
 
+internal class OuterClassArgumentsRequiredImpl(
+    override val outer: KtNamedClassOrObjectSymbol,
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.OuterClassArgumentsRequired(), KtAbstractFirDiagnostic<PsiElement> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
 internal class TypeParametersInObjectImpl(
     firDiagnostic: FirPsiDiagnostic,
     override val token: ValidityToken,