CF command counters format inconsistent with cFS

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I performed a cursory search to see if the bug report is relevant, not redundant, nor in conflict with other tickets.

Describe the bug
CF uses a separate struct (CF_HkCmdCounters_t) to hold the command and error counters. CF is the only app/component of cFS to do this.

Code snips

CF/fsw/src/cf_cmd.c

Line 51 in 930b0e5

++CF_AppData.hk.counters.cmd;

Expected behavior
Align CF command counters to the standard cFS implementation.
i.e. CF_AppData.HkPacket.CommandCounter

Reporter Info
Avi Weiss @thnkslprpt

[chillfig]

Initial PR solving this issue is reverted by #397. Reopening to be considered for Equuleus-rc2.