[#1714] lens: Separate commands

Separate `inspect` and `list` on `write-cache` and `blobovnicza`
subcommands.

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

cmd/neofs-lens/internal/flags.go

@@ -0,0 +1,35 @@
+package common
+
+import (
+	"github.com/spf13/cobra"
+)
+
+const (
+	flagAddress    = "address"
+	flagEnginePath = "path"
+	flagOutFile    = "out"
+)
+
+// AddAddressFlag adds the address flag to the passed cobra command.
+func AddAddressFlag(cmd *cobra.Command, v *string) {
+	cmd.Flags().StringVar(v, flagAddress, "", "Object address")
+	_ = cmd.MarkFlagRequired(flagAddress)
+}
+
+// AddComponentPathFlag adds the path-to-component flag to the
+// passed cobra command.
+func AddComponentPathFlag(cmd *cobra.Command, v *string) {
+	cmd.Flags().StringVar(v, flagEnginePath, "",
+		"Path to storage engine component",
+	)
+	_ = cmd.MarkFlagFilename(flagEnginePath)
+	_ = cmd.MarkFlagRequired(flagEnginePath)
+}
+
+// AddOutputFileFlag adds the output file flag to the passed cobra
+// command.
+func AddOutputFileFlag(cmd *cobra.Command, v *string) {
+	cmd.Flags().StringVar(v, flagOutFile, "",
+		"File to save object payload")
+	_ = cmd.MarkFlagFilename(flagOutFile)
+}