cmake: call cmake_minimum_required() before project()

CMake documentation on cmake_minumum_required() [1] indicates

    Call the cmake_minimum_required() command at the beginning of the
    top-level CMakeLists.txt file even before calling the project() command.
    It is important to establish version and policy settings before invoking
    other commands whose behavior they may affect.

[1] https://cmake.org/cmake/help/latest/command/cmake_minimum_required.html

CMakeLists.txt

@@ -2,12 +2,12 @@
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
 # SPDX-License-Identifier: BSD-2-Clause
+cmake_minimum_required(VERSION 3.0)
 
 # detect AppleClang; needs to come before project()
 cmake_policy(SET CMP0025 NEW)
 
 project(libfido2 C)
-cmake_minimum_required(VERSION 3.0)
 # Set PIE flags for POSITION_INDEPENDENT_CODE targets, added in CMake 3.14.
 if(POLICY CMP0083)
 	cmake_policy(SET CMP0083 NEW)