* begin exploratory rewriting of tests
* continue working on tests
* more test work! holy butts vcpkg-tests/plan.cpp was a bunch of work
* finish writing new tests
- [x] write catch2 tests
- [ ] rewrite/at least delete the VS project files
- [ ] document running tests
* Fix tests to work on WSL, rewrite test vcxproj
still need to test on macOS
also, delete tests.pch.h
* Condense add_test calls
* [vcpkg] Modify Filesystem::remove and Filesystem::rename to not throw.
* [.gitignore] Ignore new VS2019 CMake integration default location
* [.gitignore] Ignore CMakeSettings.json in toolsrc
* [vcpkg] Time external processes called with System::cmd_execute
* [vcpkg] Work around VS2019 CMake bug
* [vcpkg] Fix several unused variable warnings.
* [vcpkg] Improve error handling in vcpkg::Files::Filesystem
Always require either std::error_code or LineInfo to print better errors.
* [vcpkg] Fixup missing return value.
Drive by fix: silence warnings in tests.
* [vcpkg] Fix exiting in error_code overload
Drive by fixes for /analyze with VS2019
