Use the correct build path suffix across all platforms

Now it's correct everywhere, not only for macOS, Windows, and Linux.

Main motivation was for FreeBSD, and will also work for Android, Wasm, iOS, etc.

Author: jakepetroules

Sources/SPMBuildCore/BuildParameters/BuildParameters.swift

@@ -247,10 +247,14 @@ public struct BuildParameters: Encodable {
         switch buildSystemKind {
         case .xcode, .swiftbuild:
             var configDir: String = configuration.dirname.capitalized
-            if self.triple.isWindows() {
-                configDir += "-windows"
-            } else if self.triple.isLinux() {
-                configDir += "-linux"
+            if self.triple.isMacOSX {
+                // no suffix
+            } else if self.triple.isAndroid() {
+                configDir += "-android"
+            } else if self.triple.isWasm {
+                configDir += "-webassembly"
+            } else {
+                configDir += "-" + (self.triple.darwinPlatform?.platformName ?? self.triple.osNameUnversioned)
             }
             return dataPath.appending(components: "Products", configDir)
         case .native: