CLI console output behavior for --json and --verbose

[xinaxu]

resolves #291

Success?	--verbose	--json	stdout	stderr	exitcode
✅	❌	❌	simple CLI table	none	0
✅	❌	✅	prettified JSON	none	0
✅	✅	❌	verbose CLI table	none	0
✅	✅	✅	prettified JSON	none	0
❌	❌	❌	simple error message	none	1
❌	❌	✅	error message wrapped in JSON	none	1
❌	✅	❌	simple error message	error message stack trace	1
❌	✅	✅	erorr message wrapped in JSON	error message stack trace	1

However, due to limitation of urfave/cli, behavior of below cases do not belong to above table

• required flags not provided - urfave library will print the help page and then print the error message to the console

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -3.59% ⚠️

Comparison is base (753cdba) 73.92% compared to head (8a2a373) 70.34%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #313      +/-   ##
==========================================
- Coverage   73.92%   70.34%   -3.59%     
==========================================
  Files         130      130              
  Lines        8065     8089      +24     
==========================================
- Hits         5962     5690     -272     
- Misses       1474     1802     +328     
+ Partials      629      597      -32     

Files Changed	Coverage Δ
cmd/app.go	32.58% <0.00%> (-12.04%)	⬇️
cmd/cliutil/util.go	64.70% <0.00%> (ø)
cmd/deal/send-manual.go	76.47% <ø> (ø)

... and 7 files with indirect coverage changes

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