add cli args

internal/cargo/lockfile.go

@@ -0,0 +1,13 @@
+package cargo
+
+type CargoLock struct {
+	Packages []LockPackage `toml:"package"`
+}
+
+type LockPackage struct {
+	Name         string   `toml:"name"`
+	Version      string   `toml:"version"`
+	Dependencies []string `toml:"dependencies"`
+	Source       string   `toml:"source"`
+	Checksum     string   `toml:"checksum"`
+}