refactor: 统一环境变量命名并整理配置文件格式

1. 将所有环境变量中的Volumes_PATH统一改为Volumes_Path
2. 把旧的.env.cnf文件重命名为.env.cfg
3. 将compose.yaml文件统一替换为stack.yml/compose.yml格式
4. 删除冗余的旧版compose配置文件

gitea/rpi-prod.yml

@@ -17,8 +17,8 @@ services:
     volumes:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
-      - ${Volumes_PATH}/data:/var/lib/gitea
-      - ${Volumes_PATH}/config:/etc/gitea
+      - ${Volumes_Path}/data:/var/lib/gitea
+      - ${Volumes_Path}/config:/etc/gitea
     ports:
       - 3000:3000
       - ${SSH_HOST_PORT}:2222