Add CUDA support to bid and dpd conversions

[mborland]

Closes: #1375

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.6%. Comparing base (ff0fb2c) to head (2b1145c).
⚠️ Report is 3 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #1377     +/-   ##
=========================================
- Coverage     98.6%   98.6%   -0.0%     
=========================================
  Files          284     284             
  Lines        22675   22675             
  Branches      1974    1974             
=========================================
- Hits         22340   22338      -2     
- Misses         335     337      +2     

Files with missing lines	Coverage Δ
include/boost/decimal/bid_conversion.hpp	100.0% <100.0%> (ø)
include/boost/decimal/dpd_conversion.hpp	99.4% <100.0%> (ø)

... and 1 file with indirect coverage changes

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