add jwtkey config to avoid logging in again after reboot

internal/config/config.go

@@ -12,10 +12,16 @@ type Config struct {
 	Port             string `toml:"port" comment:"The port to listen on for the server."`
 	DatabaseFilePath string `toml:"database_file_path" comment:"Path to sqlite database file."`
 	DemoDataPath     string `toml:"demo_data_path" comment:"The path to the sql file to load for demo data."`
+	JWTKey           string `toml:"jwt_key" comment:"The key used to encrypt the generated JWT. Encoded in base64. If empty a random one will be generated on every restart."`
 }
 
 func defaultConfig() Config {
-	return Config{Port: "8080", DatabaseFilePath: "plm.db", DemoDataPath: ""}
+	return Config{
+		Port:             "8080",
+		DatabaseFilePath: "plm.db",
+		DemoDataPath:     "",
+		JWTKey:           "",
+	}
 }
 
 func LoadConfig(configPath string) Config {