新增windows支持

DateToSpine/src/editor/SpineVersionAvailability.cpp

@@ -17,6 +17,10 @@ std::vector<fs::path> SpineVersionAvailability::defaultCacheRoots() const {
         roots.emplace_back(fs::path(roaming) / "Spine/updates");
     if (const char* local = std::getenv("LOCALAPPDATA"))
         roots.emplace_back(fs::path(local) / "Spine/updates");
+    // Spine Launcher also keeps its update cache directly under the user's
+    // profile directory (e.g. C:\Users\<name>\Spine\updates).
+    if (const char* userProfile = std::getenv("USERPROFILE"))
+        roots.emplace_back(fs::path(userProfile) / "Spine/updates");
 #endif
     return roots;
 }