created a plugin for schema validation and related unit test

plugins/model.go

@@ -0,0 +1,22 @@
+package main
+
+type PluginConfig struct {
+	Plugins Plugins `yaml:"plugins"`
+}
+
+// PluginConfig represents the configuration for plugins.
+type Plugins struct {
+	ValidationPlugin ValidationPlugin `yaml:"validation_plugin"`
+}
+
+// ValidationPlugin represents the configuration for a validation plugin.
+type ValidationPlugin struct {
+	ID         string        `yaml:"id"`
+	Config     PluginDetails `yaml:"config"`
+	PluginPath string        `yaml:"plugin_path"`
+}
+
+// PluginDetails represents the details of the plugin configuration.
+type PluginDetails struct {
+	Schema string `yaml:"schema"`
+}