Move mavsdk_tests into test

test/mavsdk_tests/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.5.1)
+
+find_package(MAVSDK REQUIRED)
+
+add_executable(test_mission_multicopter
+    test_main.cpp
+    autopilot_tester.cpp
+    test_mission_multicopter.cpp
+)
+
+target_link_libraries(test_mission_multicopter
+    MAVSDK::mavsdk
+    MAVSDK::mavsdk_action
+    MAVSDK::mavsdk_mission
+    MAVSDK::mavsdk_telemetry
+)
+
+target_compile_options(test_mission_multicopter
+    PRIVATE -std=c++17 -Wall -Wextra -Werror)