Support of <usage> tag in enumerated values

[pellico]

Is your feature request related to a problem? Please describe.

Presently there is no support when a enumerated value is used only for reading or writing.

Describe the solution you'd like

Create separated type for value required to write and/or read a bitfield value. The same type shall be used for reading and writing in case that all enumerated labels are used for both reading and writing

Describe alternatives you've considered

Keep as it is and ignore bitfield that has tag so there is no conflict in case the same label is used for read and write but with different value and/or description