Restructure go project (#2356)

* Move main to cmd
* Move api to internal
* Move logger and manager to internal
* Move shell hiding code to separate package
* Decouple job from desktop and utils
* Decouple session from config
* Move static into internal
* Decouple config from dlna
* Move desktop to internal
* Move dlna to internal
* Decouple remaining packages from config
* Move config into internal
* Move jsonschema and paths to models
* Make ffmpeg functions private
* Move file utility methods into fsutil package
* Move symwalk into fsutil
* Move single-use util functions into client package
* Move slice functions to separate packages
* Add env var to suppress windowsgui arg
* Move hash functions into separate package
* Move identify to internal
* Move autotag to internal
* Touch UI when generating backend

internal/log/progress_formatter.go

@@ -0,0 +1,12 @@
+package log
+
+import (
+	"github.com/sirupsen/logrus"
+)
+
+type ProgressFormatter struct{}
+
+func (f *ProgressFormatter) Format(entry *logrus.Entry) ([]byte, error) {
+	msg := []byte("Processing --> " + entry.Message + "\r")
+	return msg, nil
+}