Add fixed destination path mapping

internal/config/config.go

@@ -32,6 +32,7 @@ type Destination struct {
 	SSH       SSH            `yaml:",inline"`
 	Publish   *PublishPolicy `yaml:"publish"`
 	Transform Transform      `yaml:"transform"`
+	PathMap   PathMapping    `yaml:"path_mapping"`
 	Transfer  TransferPolicy `yaml:"transfer"`
 }
 
@@ -80,6 +81,10 @@ type MarkdownToHTML struct {
 	Input   string `yaml:"input"`
 }
 
+type PathMapping struct {
+	Mode string `yaml:"mode"`
+}
+
 type TransferPolicy struct {
 	OnDestinationSame  string `yaml:"on_destination_same"`
 	OnDestinationOlder string `yaml:"on_destination_older"`