[C++] Add the ability to get get last used correlation id in the Archive client.
[C++] Add the ability to get get last used correlation id in the Archive client.

EvilMcJerkface/Aeron,mikeb01/Aeron,real-logic/Aeron,mikeb01/Aeron,mikeb01/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron,mikeb01/Aeron,EvilMcJerkface/Aeron,real-logic/Aeron