Gradle, native: Escape spaces in K/N compiler args

We use an argument file to pass arguments to the K/N compiler.
Earlier each line of such a file was treated by the compiler
as a separate argument. But this logic was updated some time
ago and now content for this file is treated as a space separated
list of arguments.

This patch takes this into account at the Gradle side and quotes
arguments written to the arg file.

Issue #KT-35934 Fixed

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/NewMultiplatformIT.kt

@@ -2249,4 +2249,20 @@ class NewMultiplatformIT : BaseGradleIT() {
             }
         }
     }
+
+    @Test
+    fun testNativeArgsWithSpaces() = with(Project("sample-lib", directoryPrefix = "new-mpp-lib-and-app")) {
+        setupWorkingDir()
+        val fileWithSpacesInPath = projectDir.resolve("src/commonMain/kotlin/path with spaces and special symbols like \"")
+            .apply { mkdirs() }
+            .resolve("B.kt")
+        fileWithSpacesInPath.writeText("fun foo() = 42")
+
+        build("compileKotlin${nativeHostTargetName.capitalize()}") {
+            assertSuccessful()
+            checkNativeCommandLineFor(":compileKotlin${nativeHostTargetName.capitalize()}") {
+                it.contains(fileWithSpacesInPath.absolutePath)
+            }
+        }
+    }
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/KotlinNativeToolRunner.kt

@@ -227,8 +227,11 @@ internal class KonanCompilerRunner(
             deleteOnExit()
         }
         argFile.printWriter().use { writer ->
-            args.forEach {
-                writer.println(it)
+            args.forEach { arg ->
+                val escapedArg = arg
+                    .replace("\\", "\\\\")
+                    .replace("\"", "\\\"")
+                writer.println("\"$escapedArg\"")
             }
         }