Add a Total Column

A teacher has a gradebook CSV. The first column is the student's name, and every other column is one test's mark. The school wants a copy of the file with an extra total column at the end.

Task: write add_total(in_path, in_text, out_path). Read the gradebook from in_path and write a new CSV to out_path with:

• the same header row, plus "total" at the end,
• every student row, plus that student's total at the end: the sum of every mark, leaving out the name.

Then read out_path back with csv.reader and return the list of lists.

• Every mark is a whole number. Totals are written as whole numbers too, so 14, not 14.0.
• A student's name can contain a comma. The reader and writer handle that for you.
• If there are no students, the output file is just the header row with "total" added.

The starter code includes write_text and already uses it to save in_text into in_path. import csv is already at the top. Open the output file with newline="".