pack: separate documentation build script from root package.json to docs directory root

docs/src/getting-started.md

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+# Getting Started
+
+## Clone project
+
+### Method 1: `npm init` (Recommend)
+
+You can easily clone a repository with just the npm command.
+
+```shell
+$ npm init vutron
+```
+
+The above method will not create unnecessary documentation and .github related files for your project.
+
+### Method 2: Use this template
+
+Click **[Use this template](https://github.com/jooy2/vutron/generate)** to instantly create your own project.
+
+This method creates a repository on GitHub immediately, but you will need to clone the project locally before you can use it.
+
+### Method 3: Clone this repository
+
+Clone this repo using below command. This method is suitable for direct contributions to the Vutron repository.
+
+```shell
+$ git clone https://github.com/jooy2/vutron <PROJECT_NAME>
+```
+
+## Installation
+
+After cloning the project, run the following command in the terminal:
+
+```shell
+# via npm
+$ npm i
+
+# via yarn (https://yarnpkg.com)
+$ yarn install
+
+# via pnpm (https://pnpm.io)
+$ pnpm i
+```
+
+## Run in development environment
+
+Applications in the development environment run through **[Vite](https://vitejs.dev)**.
+
+```shell
+$ npm run dev
+```
+
+If your application doesn't appear after running command line commands, you may need to review if the default port is being used by another app.
+
+Vite uses port `5173` by default.