Roughed out the new BCP tree and the first bot.

Task @T73 : Just set up the basic director structure and started
laying out the calibration bot. Nothing works at this point.
First part of cal_bot complete and working.

Task @T74 : Work on the first bot control program, cal_bot, is
progressing nicely. At this point it compiles, connects to the
simengine and runs a one second (configurable) accelleration test
to determine the actual accelleration in m/s for the bot_mk1.
Still remaining are sections to determine the actual braking rate
and turn rate.
Added brake calibration to cal_bot.

Task @T74 : Added a section to measure the actual braking rates for
the bot_mk1. Works cleanly and repeatedly in testing.
Still need to add a section for measuring the max turn rate.
cal_bot is complete and working.

Task @T74 : cal_bot is complete and well exercised. It runs three
calibration tests, linear acceleration, braking deceleration, and
turn rate. All measurements are in the bot context, meaning timing
does not hit quanta intervals precisely, but the measured values
have been running within 1% of expected; pretty good givne the
short sampling periods. I'm calling this one done.
Merge pull request #20 from fpstovall/cal_BCP

cal_bot: A bot control program which measures drive performance.

There having been no negative comments presented during the review period, I'm merging this branch with main.