[REQ] Introduce typedefs for inclination, power, heart rate, cadence, peloton resistance

[drmason789]

@cagnulein Remember the resistance_t change? Would you be agreeable to me adding cadence_t, heartRate_t, power_t, pelotonResistance_t, inclination_t alongside it and propagating throughout the codebase, in a different PR?

@drmason789 yes sure!

Originally posted by @cagnulein in #2174 (comment)

[drmason789]

I've volunteered to do this.

[drmason789]

typedef int8_t peloton_t;
typedef int16_t power_t;
typedef int16_t cadence_t;
typedef double inclination_t;

Using signed ints initially even though negative values don't make sense, for use with the "no value" pattern pre-#2269

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.