Merge pull request #4276 from abpframework/gterdem/docs_nav

Create documentation for Navs Tag Helper

docs/en/UI/AspNetCore/Tag-Helpers/Navs.md

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+# Navs
+
+## Introduction
+
+`abp-nav` is the basic tag helper component derived from bootstrap nav element.
+
+Basic usage:
+
+````csharp
+<abp-nav nav-style="Pill" align="Center">
+    <abp-nav-item>
+<a abp-nav-link active="true" href="#">Active</a>
+    </abp-nav-item>
+    <abp-nav-item>
+<a abp-nav-link href="#">Longer nav link</a>
+    </abp-nav-item>
+    <abp-nav-item>
+<a abp-nav-link href="#">link</a>
+    </abp-nav-item>
+    <abp-nav-item>
+<a abp-nav-link disabled="true" href="#">disabled</a>
+    </abp-nav-item>
+</abp-nav>
+````
+
+## Demo
+
+See the [navs demo page](https://bootstrap-taghelpers.abp.io/Components/Navs) to see it in action.
+
+## abp-nav Attributes
+
+- **nav-style**:  The value indicates the positioning and style of the containing items. Should be one of the following values: 
+  * `Default` (default value)
+  * `Vertical`
+  * `Pill`
+  * `PillVertical`
+- **align:** The value indicates the alignment of the containing items: 
+  * `Default` (default value)
+  * `Start`
+  * `Center`
+  * `End`
+
+### abp-nav-bar Attributes
+
+- **nav-style**:  The value indicates the color layout of the base navigation bar. Should be one of the following values: 
+  * `Default` (default value)
+  * `Dark`
+  * `Light`
+  * `Dark_Primary`
+  * `Dark_Secondary`
+  * `Dark_Success`
+  * `Dark_Danger`
+  * `Dark_Warning`
+  * `Dark_Info`
+  * `Dark_Dark`
+  * `Dark_Link`
+  * `Light_Primary`
+  * `Light_Secondary`
+  * `Light_Success`
+  * `Light_Danger`
+  * `Light_Warning`
+  * `Light_Info`
+  * `Light_Dark`
+  * `Light_Link`
+- **size:** The value indicates size of the base navigation bar. Should be one of the following values: 
+  * `Default` (default value)
+  * `Sm`
+  * `Md`
+  * `Lg`
+  * `Xl`
+
+### abp-nav-item Attributes
+
+**dropdown**: A value that sets the navigation item to be a dropdown menu if provided. Can be one of the following values: 
+
+* `false` (default value)
+* `true`
+
+Example:
+
+````csharp
+<abp-nav-bar size="Lg" navbar-style="Dark_Warning">
+    <a abp-navbar-brand href="#">Navbar</a>
+    <abp-navbar-toggle>
+        <abp-navbar-nav>
+            <abp-nav-item active="true">
+                <a abp-nav-link href="#">Home <span class="sr-only">(current)</span></a>
+            </abp-nav-item>
+            <abp-nav-item>
+                <a abp-nav-link href="#">Link</a>
+            </abp-nav-item>
+            <abp-nav-item dropdown="true">
+                <abp-dropdown>
+                    <abp-dropdown-button nav-link="true" text="Dropdown" />
+                    <abp-dropdown-menu>
+                        <abp-dropdown-header>Dropdown header</abp-dropdown-header>
+                        <abp-dropdown-item href="#" active="true">Action</abp-dropdown-item>
+                        <abp-dropdown-item href="#" disabled="true">Another disabled action</abp-dropdown-item>
+                        <abp-dropdown-item href="#">Something else here</abp-dropdown-item>
+                        <abp-dropdown-divider />
+                        <abp-dropdown-item href="#">Separated link</abp-dropdown-item>
+                    </abp-dropdown-menu>
+                </abp-dropdown>
+            </abp-nav-item>
+            <abp-nav-item>
+                <a abp-nav-link disabled="true" href="#">Disabled</a>
+            </abp-nav-item>
+        </abp-navbar-nav>            
+        <span abp-navbar-text>
+          Sample Text
+        </span>
+    </abp-navbar-toggle>
+</abp-nav-bar>
+````