### What changes were proposed in this pull request?
This PR adds exceptions and checking utils code to CppClient.
Besides, the ctest framework is added to CppClient for UTs.
### Why are the changes needed?
To provide exception utils and UT frmework to CppClient.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Compilation and UTs.
Closes#2966 from HolyLow/issue/celeborn-1754-add-exceptions-utils-to-cppClient.
Authored-by: HolyLow <jiaming.xie7@gmail.com>
Signed-off-by: mingji <fengmingxiao.fmx@alibaba-inc.com>
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