[FEATURE REQUEST] <Implementation of cross-correlation algorithm>

What would you like to Propose?

I noticed that there is no implementation of the cross-correlation algorithm of two desqrete signals. I would like contribute by implementing the algorithm!

Issue details

Descreption The cross-correlation algorithm will be given two desqrete signals and compute their cross-correlation. Cross-correlation measures the degree to which two signals are similar to each other.

Additional Information

Test case Here is an example: Given the descrete signals x[n]=[1,2,1,1] and y[n]=[1,1,2,1] ,
the algorithm will calculate their cross-correlation and will return the signal z[n]=[1,4,6,6,5,2,1].

I made a pull request for this one: #4984