src: allow inspector to be run on ephemeral port
Its impossible to know in general whether any specific port will be available or not, so its quite useful to run the inspector on an ephemeral port, chosen by the operating system from its free ports.
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines