Disallow --dest in remaining spots that don't actually use/allow it

[ianmcorvidae]

(at least assuming I didn't miss any)

[ianmcorvidae]

I'll be merging this in a second assuming CI is happy (enough), which will also merge #551 and #552

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 62.30%. Comparing base (70c5a30) to head (5ebc8e6).
Report is 1 commits behind head on master.

Files	Patch %	Lines
meshtastic/__main__.py	50.00%	8 Missing ⚠️
meshtastic/node.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #553      +/-   ##
==========================================
- Coverage   62.41%   62.30%   -0.12%     
==========================================
  Files          14       14              
  Lines        2879     2894      +15     
==========================================
+ Hits         1797     1803       +6     
- Misses       1082     1091       +9     

Flag	Coverage Δ
unittests	62.30% <50.00%> (-0.12%)	⬇️

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