Add util function to_record to build records

Add a new util function that helps building record values.
Records are list of dictionaries, each dictionary has the same
set of keys, they are set from the given list of headers.
Each key is associated to a value from the given matrix of values.
They are as many dictionaries as they are lines in the matrix.

Each line in the matrix will be associated to a dictionary,
each key is associated to a value from that line in the given order.

Example:
Headers: A B C
Values:
1 2 3
7 8 9
Result: [ { A: 1, B: 2, C: 3}, {A: 7, B: 8, C: 9}]

closes #1367

Signed-off-by: Alexandre Lavigne <[email protected]>

dev.py

@@ -0,0 +1,12 @@
+from pprint import pp
+
+import gspread
+
+client = gspread.service_account()
+file = client.open("TestGspread")
+sh = file.sheet1
+range = "b16:d18"
+values = sh.get_values(range)
+pp(values)
+values = sh.get(range, pad_values=True)
+pp(values)