refactor: change the code's whole structure

pkg/version/version.go

@@ -0,0 +1,27 @@
+package version // import nocternity.net/go-monitoring/pkg/version
+
+import "fmt"
+
+var (
+	version = ""
+	commit  = "unknown"
+	status  = ""
+	target  = "unknown/unknown"
+)
+
+func Version() string {
+	var schar, ver string
+	if status == "dirty" {
+		schar = "*"
+	} else {
+		schar = ""
+	}
+
+	if version == "" {
+		ver = "development version"
+	} else {
+		ver = version
+	}
+
+	return fmt.Sprintf("%s (%s%s) %s", ver, commit, schar, target)
+}