FIR: Implement more precise reporting diagnostics from new inference

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

@@ -71,6 +71,13 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.NEW_INFERENCE_ERROR) { firDiagnostic ->
+        NewInferenceErrorImpl(
+            firDiagnostic.a,
+            firDiagnostic as FirPsiDiagnostic<*>,
+            token,
+        )
+    }
     add(FirErrors.SYNTAX) { firDiagnostic ->
         SyntaxImpl(
             firDiagnostic as FirPsiDiagnostic<*>,

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

@@ -74,6 +74,11 @@ sealed class KtFirDiagnostic<PSI: PsiElement> : KtDiagnosticWithPsi<PSI> {
         abstract val unsupportedFeature: Pair<LanguageFeature, LanguageVersionSettings>
     }
 
+    abstract class NewInferenceError : KtFirDiagnostic<PsiElement>() {
+        override val diagnosticClass get() = NewInferenceError::class
+        abstract val error: String
+    }
+
     abstract class Syntax : KtFirDiagnostic<PsiElement>() {
         override val diagnosticClass get() = Syntax::class
     }

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

@@ -81,6 +81,14 @@ internal class UnsupportedFeatureImpl(
     override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
 }
 
+internal class NewInferenceErrorImpl(
+    override val error: String,
+    firDiagnostic: FirPsiDiagnostic<*>,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.NewInferenceError(), KtAbstractFirDiagnostic<PsiElement> {
+    override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
+}
+
 internal class SyntaxImpl(
     firDiagnostic: FirPsiDiagnostic<*>,
     override val token: ValidityToken,