Fixes Changes and new additions

Fixed an issue where launching server w/o screen failed
New: added an output showing screen sessions after launching
New: added stdout and stdin to screenless launch allowing interacting with server cli
Change: Broke up source code to make it easier to read and make changes
Change: Updated .gitignore

config.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"log"
+	"os"
+
+	"gopkg.in/yaml.v3"
+)
+
+const fmConfig = "config.yml"
+
+type GoConfig struct {
+	Config struct {
+		ServDir    string `yaml:"serverFolder"`
+		ServPort   int    `yaml:"port"`
+		WorldFile  string `yaml:"worldFile"`
+		ServCfg    string `yaml:"serverSettings"`
+		ServExec   string `yaml:"serverExec"`
+		BackupDir  string `yaml:"backupDir"`
+		UseScreen  bool   `yaml:"screen"`
+		ScreenName string `yaml:"screenName"`
+	} `yaml:"server"`
+}
+
+func readCfg(factCfg string) GoConfig {
+	//read config file (YAML)
+	fileBytes, err := os.ReadFile(factCfg)
+	if err != nil {
+		log.Fatalf("Error reading config file: %v", err)
+	}
+	// return Struct
+	var config GoConfig
+	err = yaml.Unmarshal(fileBytes, &config)
+	if err != nil {
+		log.Fatalf("Error unmarshalling YAML file: %v", err)
+	}
+	return config
+}