feat(schematics): enable immutability checks for root store by default (#1983)

Closes #1950

Author: itayod

modules/schematics/src/store/index.spec.ts

@@ -238,4 +238,14 @@ describe('Store Schematic', () => {
       schematicRunner.runSchematic('store', options, appTree);
     }).not.toThrow();
   });
+
+  it('should add store runtime checks', () => {
+    const options = { ...defaultOptions, module: 'app.module.ts' };
+
+    const tree = schematicRunner.runSchematic('store', options, appTree);
+    const content = tree.readContent(`${projectPath}/src/app/app.module.ts`);
+    expect(content).toMatch(/, runtimeChecks: {/);
+    expect(content).toMatch(/strictStateImmutability: true,/);
+    expect(content).toMatch(/strictActionImmutability: true/);
+  });
 });

modules/schematics/src/store/index.ts

@@ -61,11 +61,16 @@ function addImportToNgModule(options: StoreOptions): Rule {
       `${options.path}/environments/environment`
     );
 
+    const runtimeChecks = `runtimeChecks: {
+        strictStateImmutability: true,
+        strictActionImmutability: true,
+    }`;
+
     const storeNgModuleImport = addImportToModule(
       source,
       modulePath,
       options.root
-        ? `StoreModule.forRoot(reducers, { metaReducers })`
+        ? `StoreModule.forRoot(reducers, { metaReducers, ${runtimeChecks} })`
         : `StoreModule.forFeature('${stringUtils.camelize(
             options.name
           )}', from${stringUtils.classify(