feat(ignore): add "angular" ignore plugin (#4789)

Add a new ignore plugin to avoid errors using the latest Angular `input`, `model`, and `output` functions. Without it, the options object inside the function can be mutated, leading to errors with the Ivy compiler.

Also document it in the Angular guide and add the plugin by default in the angular initializer

---------
Co-authored-by: Nico Jansen <jansennico@gmail.com>

docs/configuration.md

@@ -323,11 +323,13 @@ Default: `[]`<br />
 Command line: _none_<br />
 Config file: `"ignorers": ["console.debug"]`<br />
 
-Specify which ignore-plugins to use. With an ignore-plugin you can ignore mutants inside common code patterns that you don't want to test for some reason. For example, you can use this to ignore all `console.debug()` statements from being mutated. 
+Specify which ignore-plugins to use. With an ignore-plugin, you can skip mutating specific code patterns that you don't want to test or cannot be mutated. For example, you may use an ignore-plugin to exclude all `console.debug()` statements from mutation testing. 
 
-You only specify the name of the plugins here. The plugin's implementation must be loaded using a separate file, which must be listed in your [plugins array](#plugins-string).
+Here's a list of built-in ignore plugins:
 
-See [using an ignore-plugin](./disable-mutants.md#using-an-ignore-plugin) for more information.
+- `"angular"`: Ignores mutating of code in an Angular application that is required to be static by the Angular Compiler. This includes `input()`, `output()` and `model()` option objects. This should be enabled for all Angular projects.
+
+To create your own ignore plugin, implement it in a separate file and load it by specifying its name in the [plugins array](#plugins-string). For more details, see [Using an Ignore-Plugin](./disable-mutants.md#using-an-ignore-plugin).
 
 ### `ignoreStatic` [`boolean`]
 

docs/guides/angular.md

@@ -35,6 +35,7 @@ The `npm init stryker` command also creates a `stryker.config.json` or `stryker.
     }
   },
   "reporters": ["progress", "clear-text", "html"],
+  "ignorers": ["angular"],
   "concurrency": 4,
   "concurrency_comment": "Recommended to use about half of your available cores when running stryker with angular"
 }
@@ -92,6 +93,7 @@ Create a `stryker.config.json` file with the following content:
     }
   },
   "testRunnerNodeArgs": ["--experimental-vm-modules"],
+  "ignorers": ["angular"],
   "reporters": [
     "progress",
     "clear-text",
@@ -119,7 +121,6 @@ Consider adding the Stryker TypeScript checker to increase mutation testing perf
    ```
    If you experience issues, try setting the `tsconfigFile` option to `tsconfig.app.json`.
 
-
 ## Troubleshooting
 
 Please take a look at the [troubleshooting page](../troubleshooting.md) when you run into any problems setting up StrykerJS.

e2e/test/angular-project/angular.json

@@ -60,18 +60,18 @@
           "builder": "@angular-devkit/build-angular:dev-server",
           "configurations": {
             "production": {
-              "browserTarget": "angular-project:build:production"
+              "buildTarget": "angular-project:build:production"
             },
             "development": {
-              "browserTarget": "angular-project:build:development"
+              "buildTarget": "angular-project:build:development"
             }
           },
           "defaultConfiguration": "development"
         },
         "extract-i18n": {
           "builder": "@angular-devkit/build-angular:extract-i18n",
           "options": {
-            "browserTarget": "angular-project:build"
+            "buildTarget": "angular-project:build"
           }
         },
         "test": {