Refactor some files

[ken-matsui]

No description provided.

[codecov]

Codecov Report

Merging #176 into develop will increase coverage by 0.24%.
The diff coverage is 83.94%.

@@             Coverage Diff             @@
##           develop     #176      +/-   ##
===========================================
+ Coverage    66.32%   66.56%   +0.24%     
===========================================
  Files           97       98       +1     
  Lines         5422     5501      +79     
===========================================
+ Hits          3596     3662      +66     
- Misses        1826     1839      +13

Impacted Files	Coverage Δ
tests/semver/interval.cpp	89.47% <ø> (ø)	⬆️
include/poac/core/resolver/resolve.hpp	0% <ø> (ø)	⬆️
tests/project.cpp	77.77% <ø> (ø)	⬆️
tests/config.cpp	97.26% <ø> (ø)	⬆️
tests/sat.cpp	95.45% <ø> (ø)	⬆️
tests/semver/version.cpp	95.45% <ø> (ø)	⬆️
include/poac/core/builder/builder.hpp	0% <0%> (ø)	⬆️
include/poac/util/semver/exception.hpp	0% <0%> (ø)
include/poac/core/except.hpp	40.5% <0%> (-1.06%)	⬇️
include/poac/util/semver/interval.hpp	53.76% <0%> (-0.59%)	⬇️
... and 33 more

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