Is your feature request related to a problem? Please describe.
A CFE_SB_MsgId_t value, like other IDs, is supposed to be a unique type/opaque value that identifies a message within the SB application context. Although it is currently implemented using an integer (uint32 specifically) application should not assume this. Instead, a set of macros and inline conversion functions (CFE_SB_MsgIdToValue and CFE_SB_ValueToMsgId) are provided for when the application needs to interpret the value as an integer for a valid purpose.

Describe the solution you'd like
Add conversions where they are currently missing

Additional context
See nasa/cFE#1945 for full info. A separate issue+PR will be submitted for each framework app.

Requester Info
Joseph Hickey, Vantage Systems, Inc.