Plugin#ConfigOptions: Remove placeholder and use default instead

Author: sukhwinder33445

cmd/channel/email/main.go

@@ -109,7 +109,7 @@ func (ch *Email) GetInfo() *plugin.Info {
 				"en_US": "From",
 				"de_DE": "Von",
 			},
-			Placeholder: "[email protected]",
+			Default: "[email protected]",
 		},
 	}
 

pkg/plugin/plugin.go

@@ -36,13 +36,10 @@ type ConfigOption struct {
 	//  An "en_US" locale must be given as a fallback
 	Label map[string]string `json:"label"`
 
-	// Element placeholder
-	Placeholder string `json:"placeholder,omitempty"`
-
 	// Element title: When the user moves the mouse pointer over an element, a tooltip is displayed with a given message.
 	Help map[string]string `json:"help,omitempty"`
 
-	// Element default value: bool for checkbox, string for other elements
+	// Element default: bool for checkbox default value, string for other elements (used as placeholder)
 	Default any `json:"default,omitempty"`
 
 	// Set true if this element is required, omit otherwise