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

pkg/utils/strings.go

@@ -2,41 +2,9 @@ package utils
 
 import (
 	"fmt"
-	"math/rand"
 	"strings"
-	"time"
-	"unicode"
 )
 
-var characters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890")
-
-func RandomSequence(n int) string {
-	b := make([]rune, n)
-	rand.Seed(time.Now().UnixNano())
-	for i := range b {
-		b[i] = characters[rand.Intn(len(characters))]
-	}
-	return string(b)
-}
-
-// FlipCaseSingle flips the case ( lower<->upper ) of a single char from the string s
-// If the string cannot be flipped, the original string value and an error are returned
-func FlipCaseSingle(s string) (string, error) {
-	rr := []rune(s)
-	for i, r := range rr {
-		if unicode.IsLetter(r) { // look for a letter  to flip
-			if unicode.IsUpper(r) {
-				rr[i] = unicode.ToLower(r)
-				return string(rr), nil
-			}
-			rr[i] = unicode.ToUpper(r)
-			return string(rr), nil
-		}
-
-	}
-	return s, fmt.Errorf("could not case flip string %s", s)
-}
-
 type StrFormatMap map[string]interface{}
 
 // StrFormat formats the provided format string, replacing placeholders