[#747] neofs-adm: Support ~ for paths in config

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

cmd/neofs-adm/internal/modules/config/util.go

@@ -0,0 +1,24 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// ResolveHomePath replaces leading `~`
+// with home directory.
+//
+// Does nothing if path does not start
+// with contain `~`.
+func ResolveHomePath(path string) string {
+	homeDir, _ := os.UserHomeDir()
+
+	if path == "~" {
+		path = homeDir
+	} else if strings.HasPrefix(path, "~/") {
+		path = filepath.Join(homeDir, path[2:])
+	}
+
+	return path
+}