message: Workaround for fs::remove_all()
diff: #include "pch.h"
  #include "vcpkg_Files.h"
  #include "vcpkg_System.h"
  +#include <thread>
  namespace vcpkg::Files
  {
  @@ -115,7 +116,22 @@ namespace vcpkg::Files
  }
  virtual std::uintmax_t remove_all(const fs::path & path, std::error_code& ec) override
  {
  - return fs::stdfs::remove_all(path, ec);
  + // Working around the currently buggy remove_all()
  + std::uintmax_t out = fs::stdfs::remove_all(path, ec);
  +
  + for (int i = 0; i < 5 && this->exists(path); i++)
  + {
  + using namespace std::chrono_literals;
  + std::this_thread::sleep_for(i * 100ms);
  + out += fs::stdfs::remove_all(path, ec);
  + }
  +
  + if (this->exists(path))
  + {
  + System::println(System::Color::warning, "Some files in %s were unable to be removed. Close any editors operating in this directory and retry.", path.string());
  + }
  +
  + return out;
  }
  virtual bool exists(const fs::path & path) const override
  {
  