Use fixed sizes for memory addresses and offsets in tbl/cmd/tlm

[skliper]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I reviewed the README file to see if the feature is in the major future work.
• I performed a cursory search to see if the feature request is relevant, not redundant, nor in conflict with other tickets.

Is your feature request related to a problem? Please describe.
Same as nasa/CS#26. Using cpuaddr in tbl/cmd/tlm results in different sized structures (and possibly different alignment/padding).

Describe the solution you'd like
Use CFE_ES_MemAddress_t and CFE_ES_MemOffset_t

Describe alternatives you've considered
None

Additional context
None

Requester Info
Jacob Hageman - NASA/GSFC