complete vlookup function - similar to Excel - both tab/mat

This function should work as the vlookup function in Excel

vlookup looks for the 'look up value' in the 'luv-column'-th column of 'matrix_table' and return the corresponding 'mt_col'-th element of 'matrix_table' in the same row.

example:
matrix
1 2 3
4 5 6
7 8 9

luv = 6

[content,index] = vlookup(luv,matrix,3,1,0)

vlookup will look for the "luv" in the "matrix" in column 3 and will return the value in the same row in column 1 (4).

Legenda:
lookupvalue = can be any of the following types: [char / string / categorical / numeric / calendar duration / duration / datetime]
matrix_table = can be either a matrix or table
luv_col = can be any of the following types: [char / string / categorical / numeric / calendar duration / duration / datetime]
mt_col = can be any type
k = value to be shown in case the index is an empty vector

luv_col = 1 by default if omitted
k = [ ] by default if omitted

Copyright: andrea.pinto@studbocconi.it, 2019
Author: https://it.mathworks.com/matlabcentral/profile/authors/13958739-andrea-pinto