Adding Bruteforce method in Caesar cipher algorithm

[subhroacharjee]

Is your feature request related to a problem? Please describe.
Well I just thought will it not be good if we had a method in Caesar cipher to decode for all the possible values of shift, so that in case we don't know the shift we can directly execute that method with encrypted string and get all the possible combination.

Describe the solution you'd like
Simple we will run and store all the decoded string values for shift 0-26

Describe alternatives you've considered
N/A

Additional context
I made a pull request without reading the contribution.md. sorry!

[siriak]

Merged, thanks!