implement basic web server for dashboard,

use templates to do basic SSR on head and header

app/utils.go

@@ -0,0 +1,28 @@
+package app
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+)
+
+type Config struct {
+	Port         int    `json:"listenPort"`
+	Organization string `json:"organization"`
+	PVE          string `json:"pveurl"`
+	API          string `json:"apiurl"`
+	Page         string
+}
+
+func GetConfig(configPath string) Config {
+	content, err := os.ReadFile(configPath)
+	if err != nil {
+		log.Fatal("Error when opening config file: ", err)
+	}
+	var config Config
+	err = json.Unmarshal(content, &config)
+	if err != nil {
+		log.Fatal("Error during parsing config file: ", err)
+	}
+	return config
+}