In client_server - move pair programs into separate directories (client, server in one and chatting in other[use names wisely.])

[t2013anurag]

[mukulmishra18]

I am working on it. Thanks.

[t2013anurag]

@mukulmishra18 - reference this issue in your PR.

[mukulmishra18]

I think there is some modification in the client_server directory that may affect/resolve this issue. @t2013anurag can you please check if this issue still persists?