Restructure project directories

Follow the standard of all go projects

config/structures.go

@@ -1,26 +0,0 @@
-package config
-
-type Configuration struct {
-	Workspace    string
-	Repositories []RepositoryConfig
-}
-
-type RepositoryConfig struct {
-	Name string `yaml:",omitempty"`
-	Src  string
-	Dest string   `yaml:",omitempty"`
-	Tags []string `yaml:",omitempty"`
-	Skip bool
-}
-
-type CliArguments struct {
-	ConfigurationFile string
-	Sync              bool
-	Status            bool
-	Version           bool
-	Color             bool
-	LimitToName       string
-	LimitToTags       []string
-	Routines          int
-	IgnoreSkipped     bool
-}