refactor(build): Improve the project CMake

[acelyc111]

This patch includes these changes:

• Move cmake_minimum_required to the top of CMakeLists.txt files.
• Do not pass useless cmake options when build thirdparties.
• Generate a make parallel option to speed up building thirdparty libraries.
• Add DOWNLOAD_EXTRACT_TIMESTAMP and DOWNLOAD_NO_PROGRESS when build thirdparties
  (See https://cmake.org/cmake/help/latest/module/ExternalProject.html).
• Remove the useless gflags thirdparty library.
• Add a patch from offcial repository to build rocksdb, so it's possible to build
  thirdparty directly in thirdparty diretory.