Support Decimal feature type

[nquinn408]

Is your feature request related to a problem? Please describe.
Currently, there is no equivalent for higher precision decimal value in feast for feature type.

Describe the solution you'd like
Support decimal.Decimal (https://docs.python.org/3/library/decimal.html) as feast feature type

Describe alternatives you've considered
Float or Double but when precision is critical, these won't cut it.

[nagisa-kunhah]

Hey can I pick up this issue?

[nquinn408]

Hey can I pick up this issue?

Of course! Go for it! Will assign.