fix: alias values were not being set properly

[FerroEduardo]

As values are read using internal/config/viper_config.go, it is unnecessary to use viper.SetDefault(), as the default value from ViperConfigKey is used if the variable is not set.

deckard/internal/config/viper_config.go

Lines 36 to 52 in 6083960

	func (config *ViperConfigKey) Get() string {
	if viper.IsSet(config.Key) {
	return viper.GetString(config.Key)
	}
	for _, alias := range config.GetAliases() {
	if viper.IsSet(alias) {
	return viper.GetString(alias)
	}
	}
	if val, ok := config.GetDefault().(string); ok {
	return val
	}
	return ""
	}

Fixes #51

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.19%. Comparing base (5a2182c) to head (26a946f).
Report is 31 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #53       +/-   ##
===========================================
- Coverage   82.11%   68.19%   -13.93%     
===========================================
  Files          26       30        +4     
  Lines        3696     4823     +1127     
===========================================
+ Hits         3035     3289      +254     
- Misses        519     1384      +865     
- Partials      142      150        +8     

Files with missing lines	Coverage Δ
internal/config/config.go	84.21% <ø> (-4.26%)	⬇️

... and 5 files with indirect coverage changes