refactor: Refactor main

[kuznetsss]

For #442.

[codecov]

Codecov Report

Attention: Patch coverage is 51.69492% with 57 lines in your changes missing coverage. Please review.

Project coverage is 69.19%. Comparing base (fb90fb2) to head (acd966d).

Files	Patch %	Lines
src/app/ClioApplication.cpp	0.00%	36 Missing ⚠️
src/main/Main.cpp	0.00%	14 Missing ⚠️
src/web/Server.hpp	50.00%	0 Missing and 4 partials ⚠️
src/app/CliArgs.hpp	66.66%	1 Missing ⚠️
src/rpc/Errors.cpp	0.00%	1 Missing ⚠️
src/web/impl/HttpBase.hpp	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1555      +/-   ##
===========================================
+ Coverage    68.79%   69.19%   +0.39%     
===========================================
  Files          239      244       +5     
  Lines         9677     9702      +25     
  Branches      5372     5384      +12     
===========================================
+ Hits          6657     6713      +56     
+ Misses        1624     1589      -35     
- Partials      1396     1400       +4     

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[cindyyan317]

Code looks good to me. But ut is failing.

[godexsoft]

Found some small things. Overall i like the changes 👍