docs: add cli docs

docs/cli/src/configure.md

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+# Configure Project
+
+This chapter will introduce `Dioxus.toml` and anatomy the config file.
+
+## Structure
+
+We use `toml` to define some info for `dioxus` project.
+
+### Application
+
+1. ***name*** - project name & title
+2. ***default_platform*** - which platform target for this project.
+   ```
+   # current support: web, desktop
+   # default: web
+   default_platform = "web"
+   ```
+   change this to `desktop`, the `dioxus build & serve` will default build desktop app.
+3. ***out_dir*** - which directory to put the output file; use `dioxus build & service`, the output will put at this directory, and the `assets` will be also copy to here.
+    ```
+    out_dir = "dist"
+    ```
+4. ***asset_dir*** - which direcotry to put your `static, assets` file, cli will automatic copy all file to `out_dir`, so you can put some resource file in there, like `CSS, JS, Image` file.
+   ```
+   asset_dir = "public"
+   ```
+
+### Web.App
+
+1. ***title*** - this value will display on the web page title. like `<title></title>` tag.