Merge pull request #12937 from abpframework/EngincanV/CLI-docs-theme

Add `--theme` parameter to CLI documentation

docs/en/CLI.md

@@ -126,6 +126,9 @@ For more samples, go to [ABP CLI Create Solution Samples](CLI-New-Command-Sample
     * `--database-provider` or `-d`: Specifies the database provider. Default provider is `ef`. Available providers:
         * `ef`: Entity Framework Core.
         * `mongodb`: MongoDB.
+    * `--theme`: Specifes the theme. Default theme is `leptonx-lite`. Available themes:
+        * `leptonx-lite`: [LeptonX Lite Theme](/Themes/LeptonXLite/mvc.md).
+        * `basic`: [Basic Theme](/UI/AspNetCore/Basic-Theme.md).
   * **`module`**: [Module template](Startup-Templates/Module.md). Additional options:
     * `--no-ui`: Specifies to not include the UI. This makes possible to create service-only modules (a.k.a. microservices - without UI).
   * **`console`**: [Console template](Startup-Templates/Console.md).
@@ -138,6 +141,9 @@ For more samples, go to [ABP CLI Create Solution Samples](CLI-New-Command-Sample
     * `--database-provider` or `-d`: Specifies the database provider. Default provider is `ef`. Available providers:
         * `ef`: Entity Framework Core.
         * `mongodb`: MongoDB.
+    * `--theme`: Specifes the theme. Default theme is `leptonx-lite`. Available themes:
+        * `leptonx-lite`: [LeptonX Lite Theme](/Themes/LeptonXLite/mvc.md).
+        * `basic`: [Basic Theme](/UI/AspNetCore/Basic-Theme.md).        
 * `--output-folder` or `-o`: Specifies the output folder. Default value is the current directory.
 * `--version` or `-v`: Specifies the ABP & template version. It can be a [release tag](https://github.com/abpframework/abp/releases) or a [branch name](https://github.com/abpframework/abp/branches). Uses the latest release if not specified. Most of the times, you will want to use the latest version.
 * `--preview`: Use latest preview version.