Meeting Timer to Measure Talk Times of Participants

      Name         Time       %
-------------------------------
   a  Angelina     000:03    4%
   b  Bernardo     000:45   55%
>  c  Charlotte    000:30   36%
   x  Unknown 'x'  000:03    4%
      Talk:        001:23  ----
      Total        001:31   91%

1. dotnet run test.json create to create a new data file test.json, which contains keyboard shortcut definitions for participants and recorded sessions
2. add and adapt participants' names and shortcuts in the Shortcuts section of the json data file
3. start a new session with dotnet run test.json session ["session name"] (session name is optional) to run a new session
4. press shortcut id to activate speaker; press Space Bar to deactivate; press new shortcut to add non-predefined ad hoc speaker (remember real name mapping! ;-); press Escape to exit session
5. for now, session data can be found at the end of the json data file; run your own reporting