feat: add version display supports. #38
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Thanks for this little neat tool. I know there are tons of http server in other language but it is always convenient to have something we can install/upgrade using pub.
Sometimes the fastest way to check if a global pub executable is available is to run something like
and have an exit code of 0. I added support for the version flag. I copied what was done in webdev (using build_version) and fixed the unit tests.