Added gRPC library

cmake/flags.cmake

@@ -1,17 +1,3 @@
-set(CMAKE_CXX_EXTENSIONS OFF)
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
-set(CMAKE_C_STANDARD 99)
-set(CMAKE_C_STANDARD_REQUIRED ON)
-
-if(NOT ARCH_ID)
-  if(CMAKE_SYSTEM_PROCESSOR STREQUAL "")
-    set(CMAKE_SYSTEM_PROCESSOR ${CMAKE_HOST_SYSTEM_PROCESSOR})
-  endif()
-  string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" ARCH_ID)
-endif()
-
 if (ARCH_ID MATCHES "^(aarch64|arm64|armv8-a)$")
 	set(ARMv8 1)
 endif()