Add LC_SAMPLE_AP_ALL_MID to use a cmd w/ no parameters to process all watchpoints

[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.
LC_SAMPLE_AP_MID is out-of-family with most MIDs for doing simple processing (like SEND_HK, etc) in that it has parameters. This is fine until you try to send it from something like sch_lab which doesn't support command parameters.

Describe the solution you'd like
Add a simple LC_SAMPLE_AP_ALL_MID w/ no parameters (size 8)

Describe alternatives you've considered
None

Additional context
None

Requester Info
Jacob Hageman - NASA/GSFC

[skliper]

Alternatively could just use current MID but if the size shows no parameters just call w/ the full range. What's the preference @dmknutsen (or others)?