[C]: add some image_poll basic tests akin to TermRead Java test.
[C]: add some image_poll basic tests akin to TermRead Java test.

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