[analysis api fir] put every library into a separate KtModule in tests

compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/ModuleDataProvider.kt

@@ -55,3 +55,12 @@ class MultipleModuleDataProvider(private val moduleDataWithFilters: Map<FirModul
         return null
     }
 }
+
+class EmptyModuleDataProvider(
+    override val platform: TargetPlatform,
+    override val analyzerServices: PlatformDependentAnalyzerServices
+) : ModuleDataProvider() {
+    override val allModuleData: Collection<FirModuleData> get() = emptyList()
+
+    override fun getModuleData(path: Path?): FirModuleData? = null
+}