feat: 增加颜色变量和函数

common.sh

@@ -1,5 +1,28 @@
 #!/bin/bash
 
+green="\033[32m"
+blue="\033[36m"
+yellow="\033[33m"
+reset="\033[0m"
+
+step() {
+    echo ""
+    echo -e "${blue}👉 $1${reset}"
+    sleep 0.5
+}
+
+success() {
+    echo -e "${green}✅ $1${reset}"
+}
+
+skip() {
+    echo -e "${yellow}⏭️ $1${reset}"
+}
+
+info() {
+    echo -e "${blue}👉 $1${reset}"
+}
+
 # 安装 Image Builder 构建所需依赖
 install_dependencies() {
   sudo apt install -y build-essential libncurses-dev zlib1g-dev gawk git \