Bit on Bottom computation additional error flag for bad data

child of #797
When computing the bit on bottom flag, due to bad data quality, the computed delta of Hole Depth - Bit Depth can be <0.

When this condition exists, that is typically due to a bad user input at the rig when the user incorrectly sets either the bit depth or the hole depth manually. In this case, we need to throw an error flag when the value of Hole Depth - Bit Depth <= -1.0 feet.

The human context of this would be "Bit deeper than hole depth".