Add HTTP upload configuration support

internal/config/config.go

@@ -1,10 +1,24 @@
 package config
 
 type Config struct {
+	Server    Server     `yaml:"server"`
 	Secrets   Secrets    `yaml:"secrets"`
 	Pipelines []Pipeline `yaml:"pipelines"`
 }
 
+type Server struct {
+	HTTP HTTPServer `yaml:"http"`
+}
+
+type HTTPServer struct {
+	Bind           string    `yaml:"bind"`
+	StagingRoot    string    `yaml:"staging_root"`
+	MaxUploadSize  *ByteSize `yaml:"max_upload_size"`
+	QueueSize      int       `yaml:"queue_size"`
+	MaxConcurrency int       `yaml:"max_concurrency"`
+	Retention      *Duration `yaml:"retention"`
+}
+
 type Secrets struct {
 	Directory string `yaml:"directory"`
 }
@@ -50,6 +64,13 @@ type Backend struct {
 	ForcePath *bool       `yaml:"force_path_style"`
 	Creds     Credentials `yaml:"credentials"`
 	SSH       SSH         `yaml:",inline"`
+	Upload    HTTPUpload  `yaml:",inline"`
+}
+
+type HTTPUpload struct {
+	TokenEnv      string    `yaml:"token_env"`
+	StagingPath   string    `yaml:"staging_path"`
+	MaxUploadSize *ByteSize `yaml:"max_upload_size"`
 }
 
 type SSH struct {