[MM-18592] Add IconPath field to plugin manifest (#12189)

model/manifest.go

@@ -130,6 +130,10 @@ type Manifest struct {
 	// A description of what your plugin is and does.
 	Description string `json:"description,omitempty" yaml:"description,omitempty"`
 
+	// A relative file path in the bundle that points to the plugins svg icon for use with the Plugin Marketplace.
+	// This should be relative to the root of your bundle and the location of the manifest file. Bitmap image formats are not supported.
+	IconPath string `json:"icon_path,omitempty" yaml:"icon_path,omitempty"`
+
 	// A version number for your plugin. Semantic versioning is recommended: http://semver.org
 	Version string `json:"version" yaml:"version"`