Add project files

breeze/cmake/toolchains/windows-x64-msvc.cmake

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+# windows-x64-msvc: Microsoft's cl.exe building for x64 Windows.
+#
+# Run from an "x64 Native Tools Command Prompt for VS" (or any shell where
+# vcvars64.bat has been run): cl.exe cannot be pointed at an architecture
+# from here, the developer environment decides it. TargetSelection.cmake
+# verifies the cl.exe it got really targets x64.
+#
+# See _common.cmake (pmn_msvc_toolchain).
+include("${CMAKE_CURRENT_LIST_DIR}/_common.cmake")
+
+pmn_toolchain_target("windows-x64-msvc")
+pmn_msvc_toolchain(x64)