Remove nettle library from OAI, support OpenSSL 3.0 and 1.1

Add byte_array_t structure under common/

cmake_targets/tools/MODULES/FindNettle.cmake

@@ -1,22 +0,0 @@
-# Find the native Nettle includes, library, and flags
-#
-# NETTLE_INCLUDE_DIR - where to find nettle.h, etc.
-# NETTLE_LIBRARIES - List of libraries when using Nettle.
-# NETTLE_FOUND - True if Nettle found.
-IF (NETTLE_INCLUDE_DIR)
-# Already in cache, be silent
-    SET(NETTLE_FIND_QUIETLY TRUE)
-ENDIF (NETTLE_INCLUDE_DIR)
-FIND_PATH(NETTLE_INCLUDE_DIR nettle/nettle-meta.h)
-SET(NETTLE_NAMES nettle)
-FIND_LIBRARY(NETTLE_LIBRARY NAMES ${NETTLE_NAMES} )
-# handle the QUIETLY and REQUIRED arguments and set NETTLE_FOUND to TRUE if
-# all listed variables are TRUE
-INCLUDE(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(NETTLE DEFAULT_MSG NETTLE_LIBRARY NETTLE_INCLUDE_DIR)
-IF(NETTLE_FOUND)
-    SET(NETTLE_LIBRARIES ${NETTLE_LIBRARY})
-ELSE(NETTLE_FOUND)
-    SET(NETTLE_LIBRARIES )
-ENDIF(NETTLE_FOUND)
-MARK_AS_ADVANCED(NETTLE_LIBRARY NETTLE_INCLUDE_DIR)