Add deserializer source file including stubs
Add deserialize callback implementation
Add implementation of ws_serializer_json_deserializer_new()
Add json files to CMakeLists
Add deserializer state helper interface
Add stubs dor deserializer state helper
Add implementation for deserializer_state_new()
Add implementation for deserializer_state_init_cmds()
Add implementation for deserializer_state_new_arg()
Add implementation for deserializer_state_mod_last_arg_set_direct()
Add implementation for deserializer_state_mod_last_arg_set_indirect()
Add implementation for deserializer_state_mod_last_arg_set_null()
Add implementation for deserializer_state_mod_last_arg_set_bool()
Add implementation for deserializer_state_mod_last_arg_set_int()
Add implementation for deserializer_state_mod_last_arg_set_string()
Add implementation for deserializer_state_push_cmd()
Add deserializer state file to CMakeLists
Add deserializer state header to deserializer interface implementation