style(setup): Convert some flags to sub commands

Since flags should not do very different operations.

.github/README.md

@@ -63,24 +63,28 @@ Run one line [setup](../setup), see the [usage](#-usage) for the detail.
 > _Just config files_
 >
 > ```shell
-> zsh <(curl -sL dotup.vercel.app) --set
+> zsh <(curl -sL dotup.vercel.app) set
 > ```
 
 <br /><br />
 
 ## 📊 Usage
 
-### `setup --help`
+### `setup help`
 
 ```shell
-Usage: setup
+  ▌ Usage: setup
 
-⚙️ The most minimal and powerful dotfiles ever.
+  │ ⚙️ The most minimal and powerful dotfiles ever.
 
-Flags:
-  -h, --help    Print help information
-  -y, --yes     Start without confirmation
-  -s, --set     Set files to home directory
+  ▌ Commands:
+
+  • help    Print help information
+  • set     Set files to home directory
+
+  ▌ Flags:
+
+  • -y, --yes    Start without confirmation
 ```
 
 <br /><br />

setup

@@ -128,10 +128,12 @@ helpMsg() {
 
 > ⚙️ The most minimal and powerful dotfiles ever.
 
+## Commands:
+-  help    Print help information
+-  set     Set files to home directory
+
 ## Flags:
--  -h, --help    Print help information
--  -y, --yes     Start without confirmation
--  -s, --set     Set files to home directory
+-  -y, --yes    Start without confirmation
 EOM
 }
 
@@ -171,18 +173,18 @@ EOM
   fi
 else
   case "$1" in
-  '-h' | '--help')
+  'help')
     helpMsg
     exit
     ;;
+  'set')
+    getDot && checkSym && mkSym
+    exit
+    ;;
   '-y' | '--yes')
     goThrough=true
     export NONINTERACTIVE=1
     ;;
-  '-s' | '--set')
-    getDot && checkSym && mkSym
-    exit
-    ;;
   *)
     gum format <<EOM
 > **$(gum style 1 'Error')**