FR: anemo command line tool

[aschran]

Like curl but for anemo

Features that would be nice:

• craft and send arbitrary requests to any anemo endpoint (needs to support whatever kind of admin keys or credentials would be required for this to be safe)
• query for list of available services and methods

[aschran]

More inspiration: https://github.com/grpc/grpc/blob/master/doc/command_line_tool.md