[test] use cmake to run unit tests (#8724)

This commit migrates unit tests to cmake.
* build unit tests with cmake
* add missing tests in cmake
* use ctest
* add platform udp stubs for test platform
* skip some static_assert with gcc-4

script/package

@@ -39,6 +39,7 @@ main()
 {
     local builddir
     local options=(
+        "-DBUILD_TESTING=OFF"
         "-DCMAKE_BUILD_TYPE=Release"
         "-DOT_COVERAGE=OFF"
         "-DOT_LOG_LEVEL=INFO"