Remove vendored usvfs and Windows-only usvfs code paths

The Linux port uses its own in-process FUSE VFS (FuseConnector), so
usvfs was dead weight: libs/usvfs/ was never built, usvfsconnector.cpp
was explicitly REMOVE_ITEM'd from the source list, and every call site
was already guarded by #ifdef _WIN32 with a working Linux branch (the
Windows build is also broken on this branch, since FUSE3 is a hard
find_package dependency).

- Drop libs/usvfs/ and src/src/usvfsconnector.{cpp,h}
- Collapse #ifdef _WIN32 / usvfs include branches in organizercore,
  mainwindow, settings, util, spawn
- Remove getUsvfsVersionString() and the "usvfs: ..." log field
- Remove vfs32/64DLLName APPPARAMs (nothing reads them)
- Relabel About dialog "usvfs:" row to "VFS: FUSE 3"

1 files changed, 0 insertions, 139 deletions

diff --git a/libs/usvfs/test/fixtures/usvfs_global_test/RedFileSystemTest/example.cpp b/libs/usvfs/test/fixtures/usvfs_global_test/RedFileSystemTest/example.cpp
deleted file mode 100644
index 9a79d16..0000000
--- a/libs/usvfs/test/fixtures/usvfs_global_test/RedFileSystemTest/example.cpp
+++ /dev/null
@@ -1,139 +0,0 @@
-#include <filesystem>
-#include <fstream>
-
-std::filesystem::path storages_path;
-std::filesystem::path hudpainter_path;
-bool has_mo2;
-
-// See below main() for implementation.
-void request_directory(std::filesystem::path);
-std::filesystem::path restrict_path(std::filesystem::path);
-std::vector<std::filesystem::path> get_files();
-std::string read_file(std::filesystem::path);
-void write_file(std::filesystem::path);
-
-// Expected path when not using MO2
-int main()
-{
-  // RedFileSystem plugin (DLL) is loaded.
-  has_mo2 = GetModuleHandle(TEXT("usvfs_x64.dll")) != nullptr;
-
-  // Setup paths
-  auto path      = std::filesystem::absolute(".");    // <GAME>\bin\x64
-  auto game_path = path.parent_path().parent_path();  // <GAME>
-
-  storages_path = game_path / "r6" / "storages";  // <GAME>\r6\storages
-
-  // Create storages directory if it is no present.
-  request_directory(storages_path);  // <GAME>\r6\storages
-
-  // Game is running...
-
-  // HUD Painter request its storage endpoint.
-  hudpainter_path = storages_path / "HUDPainter";
-  request_directory(hudpainter_path);  // <GAME>\r6\storages\HUDPainter
-
-  // HUD Painter request a file (present in archive).
-  auto default_path =
-      restrict_path("DEFAULT.json");  // <GAME>\r6\storages\HUDPainter\DEFAULT.json
-
-  // HUD Painter read file in `default_path` with success.
-  auto data = read_file(default_path);  // <GAME>\r6\storages\HUDPainter\DEFAULT.json
-
-  // HUD Painter request another file.
-  auto test_path =
-      restrict_path("TEST.json");  // <GAME>\r6\storages\HUDPainter\TEST.json
-
-  // (Bug A) HUD Painter write file in `test_path`.
-  write_file(test_path);  // <GAME>\r6\storages\HUDPainter\TEST.json
-                          // file is created with workaround, not created otherwise.
-
-  // (Bug B) HUD Painter request list of files.
-  //         TEST.json is successfully created when using workaround.
-  auto files = get_files();  // [0] <GAME>\r6\storages\HUDPainter\DEFAULT.json
-
-  // files.size() == 1
-
-  // Expect:
-  // files.size() == 2
-  //
-  // [0] <GAME>\r6\storages\HUDPainter\DEFAULT.json
-  // [1] <GAME>\r6\storages\HUDPainter\TEST.json
-}
-
-// Create directory if it is no present
-void request_directory(std::filesystem::path path)
-{
-  bool is_present = std::filesystem::exists(path);
-
-  if (is_present) {
-    return;
-  }
-  std::filesystem::create_directory(path);
-}
-
-// Resolve path for HUDPainter (security layer)
-std::filesystem::path restrict_path(std::filesystem::path path)
-{
-  auto real_path = std::filesystem::weakly_canonical(hudpainter_path / path);
-
-  // Workaround when using MO2
-  if (has_mo2) {
-    return real_path;
-  }
-  // Expected implementation without MO2
-  if (real_path.string().find(hudpainter_path.string() + "\\") != 0) {
-    // "throw" error
-  }
-  return real_path;
-}
-
-// List files in storage of HUDPainter.
-std::vector<std::filesystem::path> get_files()
-{
-  std::vector<std::filesystem::path> files;
-  auto entries = std::filesystem::directory_iterator(hudpainter_path);
-
-  for (const auto& entry : entries) {
-    if (entry.is_regular_file()) {
-      auto file_name = entry.path().filename();
-      auto file_path =
-          hudpainter_path /
-          file_name;  // Culprit of bug B. When using entry.path() directly, it works.
-
-      files.emplace_back(file_path);
-    }
-  }
-  return files;
-}
-
-std::string read_file(std::filesystem::path path)
-{
-  std::ifstream stream;
-
-  // With workaround:
-  // std::filesystem::create_directories(path.parent_path());
-  stream.open(path);
-  if (!stream.is_open()) {
-    return "";
-  }
-  std::stringstream data;
-
-  data << stream.rdbuf();
-  stream.close();
-  return data.str();
-}
-
-void write_file(std::filesystem::path path)
-{
-  std::ofstream stream;
-
-  // With workaround:
-  // std::filesystem::create_directories(path.parent_path());
-  stream.open(path, std::ios_base::trunc);
-  if (!stream.is_open()) {
-    return;
-  }
-  stream << "<DATA>";
-  stream.close();
-}