Expose keep alive interval for c and c++ client #855

Job	Run time
Formatting Check	50s
Build the Wireshark dissector	1s
Build CPP Client on macOS	1s
Run unit tests	1s
Build with the C++20 standard	1s
Build ${{ matrix.pkg.name }} ${{ matrix.cpu.platform }}	1s
Build CPP Client on macOS with static dependencies	1s
Build CPP Client on ${{ matrix.name }}	1s
Check Completion	1s
	58s

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