Remove the useless PID initialization code
Add the attitude PID parameters into global data list
Create function "set_pid_parameter"
Let the system read PID parameters from global data list
Add new shell command "list"
Create function "get_global_data_access_right"
Create new shell command "set"
Fix the global data's0 access right was not setting issue
Merge branch 'global_data' into set_command