fix(generator): fixed the support of native plugins in add command

refractored the code to fix the error of supporting the native plugin in
add-generator. removed the toLowerCase() method, added the logic for
more general plugin name from the input

Author: anikethsaha

packages/generators/add-generator.ts

@@ -291,6 +291,13 @@ export default class AddGenerator extends Generator {
 					 * find the names of each natively plugin and check if it matches
 					 */
 					if (action === "plugins") {
+						let answeredPluginName = answerToAction.actionAnswer
+						let isPrefixPresent = /webpack./.test(answeredPluginName);
+						if( isPrefixPresent ){
+							answeredPluginName = answeredPluginName.replace("webpack.","").trim()
+						}else{
+							answeredPluginName = answeredPluginName.trim()
+						}
 						const pluginExist: string = glob
 							.sync(["node_modules/webpack/lib/*Plugin.js", "node_modules/webpack/lib/**/*Plugin.js"])
 							.map(
@@ -300,7 +307,7 @@ export default class AddGenerator extends Generator {
 										.pop()
 										.replace(".js", "")
 							)
-							.find((p: string): boolean => p.toLowerCase().indexOf(answerToAction.actionAnswer) >= 0);
+							.find((p: string): boolean => p.indexOf(answeredPluginName) >= 0);
 
 						if (pluginExist) {
 							this.configuration.config.item = pluginExist;
@@ -315,8 +322,7 @@ export default class AddGenerator extends Generator {
 											.split("/")
 											.pop()
 											.replace(".json", "")
-											.toLowerCase()
-											.indexOf(answerToAction.actionAnswer) >= 0
+											.indexOf(answeredPluginName) >= 0
 								);
 							if (pluginsSchemaPath) {
 								const constructorPrefix: string =