Make WhatsApp device name configurable

config/config.go

@@ -66,6 +66,11 @@ type Config struct {
 		Listen  string `yaml:"listen"`
 	} `yaml:"metrics"`
 
+	WhatsApp struct {
+		DeviceName string `yaml:"device_name"`
+		ShortName  string `yaml:"short_name"`
+	} `yaml:"whatsapp"`
+
 	Bridge BridgeConfig `yaml:"bridge"`
 
 	Logging appservice.LogConfig `yaml:"logging"`
@@ -74,6 +79,8 @@ type Config struct {
 func (config *Config) setDefaults() {
 	config.AppService.Database.MaxOpenConns = 20
 	config.AppService.Database.MaxIdleConns = 2
+	config.WhatsApp.DeviceName = "Mautrix-WhatsApp bridge"
+	config.WhatsApp.ShortName = "mx-wa"
 	config.Bridge.setDefaults()
 }