refactor thumbnails

Signed-off-by: Christian Richter <crichter@owncloud.com>

extensions/thumbnails/pkg/config/debug.go

@@ -0,0 +1,9 @@
+package config
+
+// Debug defines the available debug configuration.
+type Debug struct {
+	Addr   string `yaml:"addr" env:"THUMBNAILS_DEBUG_ADDR"`
+	Token  string `yaml:"token" env:"THUMBNAILS_DEBUG_TOKEN"`
+	Pprof  bool   `yaml:"pprof" env:"THUMBNAILS_DEBUG_PPROF"`
+	Zpages bool   `yaml:"zpages" env:"THUMBNAILS_DEBUG_ZPAGES"`
+}