add documentation for Title Strategy

docs/en/UI/Angular/Title-Strategy-Service.md

@@ -0,0 +1,60 @@
+# Title Strategy For Angular
+
+## **ABP has a default title strategy for Angular UI**.
+
+This strategy is based on the title property. Provide a title property when setting a new route.
+**Example:**
+
+```ts
+{
+  path:  'customers',
+  component: CustomersComponent,
+  title: 'AbpCustomers::Roles'
+},
+```
+
+**`Note:`**
+
+- It is better to use localized text in title property. It will be translated by **LocalizationService**.
+- **`title`** property is already setted in **ABP internal packages**.
+
+## How it looks
+
+You create a new route and provide a **`title`** property, it will look like this **`<title> | <projectName>`**
+
+### What is `projectName` and How to Customize
+
+- **`projectName`** is name of your application. By default ABP set's a [**`projectName`**](https://github.com/abpframework/abp/blob/f48f78618a326644843c01424b093f0d79448769/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain.Shared/Localization/MyProjectName/en.json#L4) for your application. This localization text is added for customization, it can be changed for different languages.
+
+### Disable `projectName`
+
+- If you dont want to show **`projectName`** in title, you can disable it.
+
+**app.module.ts**
+
+```ts
+import { DISABLE_PROJECT_NAME } from  '@abp/ng.core';
+
+providers: [
+  ...,
+  { provide:  DISABLE_PROJECT_NAME, useValue:  true}
+],
+```
+
+- Now only title will be shown.
+
+## Override ABP's Default Title Strategy
+
+**app.module.ts**
+
+```ts
+import { TitleStrategy } from  '@angular/router';
+import { YourCustomStrategy } from  './title-strategy.service.ts';
+
+providers: [
+  ...,
+  { provide: TitleStrategy, useExisting: YourCustomStrategy },
+],
+```
+
+- You can check [Angular Documentation](https://angular.io/api/router/TitleStrategy) to write custom **`TitleStrategy`**.

docs/en/docs-nav.json

@@ -1188,6 +1188,10 @@
                 {
                   "text": "Abp Window Service",
                   "path": "UI/Angular/Abp-Window-Service.md"
+                },
+                {
+                  "text": "Title Strategy",
+                  "path": "UI/Angular/Title-Strategy-Service.md"
                 }
               ]
             },