feat: add default_platform config

src/assets/dioxus.toml

@@ -1,23 +1,24 @@
 [application]
 
-# App (Project) Name
+# dioxus project name
 name = "{{project-name}}"
 
-# Dioxus App Support Platform
-# desktop, web, mobile, ssr
-platforms = ["web"]
+# default platfrom
+# you can also use `dioxus serve/build --platform XXX` to use other platform
+# value: web | desktop
+default_platform = "web"
 
 # Web `build` & `serve` dist path
 out_dir = "dist"
 
+# resource (static) file folder
+public_dir = "public"
+
 [web.app]
 
 # HTML title tag content
 title = "dioxus | ⛺"
 
-# resource (static) file folder
-public_dir = "public"
-
 [web.watcher]
 
 watch_path = ["src"]