Main

Additional read_test uring adjustments.

Clean up read test code. Add liburing 2.4 as external source.

Update checker.py script with a more object oriented design. Google SMTP
relay no longer works without 2 factor authentication so email
notificaiton does not currently work.

Correcting longstanding issue with Redmine/NextCloud Apache config.

read_test: Added SynchronizedCounter class.

read_test: Add helper functions to read and validate the current kernel
version. Also add validation for the uring read type to ensure that the
kernel version is >= 5.6.

read_test: Add optional comment block to output input data one chunk per
file. This can be used to verify that the output data matches the input
data.

read_test: add new uring read method to read_test. It uses (requires)
liburing and a kernel >= 5.6.

Correct multiply by integer operator. Also add test cases.

Use boost::program_options for the main program.