🎨 Refactoring the extension service and the keybinding service

internal/models/extensions.go

@@ -107,14 +107,7 @@ func NewDefaultExtensions() []Extension {
 			Enabled:   true,
 			IsDefault: true,
 			Config: ExtensionConfig{
-				"defaultSourceLang":    "auto",
-				"defaultTargetLang":    "zh",
 				"defaultTranslator":    "bing",
-				"showTranslateButton":  true,
-				"showButtonOnSelect":   true,
-				"buttonDisplayDelay":   300,
-				"tooltipTimeout":       0,
-				"maxTooltipWidth":      300,
 				"minSelectionLength":   2,
 				"maxTranslationLength": 5000,
 			},