refactor color system to be separate from models, also move errors out of models.

cmd/bridgetest/main.go

@@ -7,6 +7,7 @@ import (
 	"flag"
 	"fmt"
 	"git.aiterp.net/lucifer/new-server/app/config"
+	"git.aiterp.net/lucifer/new-server/internal/color"
 	"git.aiterp.net/lucifer/new-server/models"
 	"log"
 	"os"
@@ -124,7 +125,7 @@ func main() {
 				continue
 			}
 
-			color, err := models.ParseColorValue(tokens[2])
+			color, err := color.Parse(tokens[2])
 			if err != nil {
 				_, _ = fmt.Fprintln(os.Stderr, "Invalid color:", err)
 				continue

cmd/xy/main.go

@@ -1,21 +1,15 @@
 package main
 
 import (
-	"encoding/json"
-	"git.aiterp.net/lucifer/new-server/models"
+	"git.aiterp.net/lucifer/new-server/internal/color"
 	"log"
 )
 
 func main() {
-	cv, _ := models.ParseColorValue("rgb:#fff")
+	cv, _ := color.Parse("xy:0.1944,0.0942")
 	hs, _ := cv.ToHS()
 	log.Println(cv.String())
 	log.Println(hs.String())
 	xy, _ := hs.ToXY()
 	log.Println(xy.String())
 }
-
-func toJSON(v interface{}) string {
-	j, _ := json.Marshal(v)
-	return string(j)
-}