Replaces hardcoded systemd service file paths with dynamic retrieval
using `controller.GetServicePath`, enhancing maintainability and
flexibility of the snapshot creation process.

Relates to optimization of systemd service file handling.

…1panel-v2

…arious systems

Introduces `SelectInitScript` and `GetScriptName` functions to determine
appropriate init script names based on the service manager type.

Supports differences in file naming conventions across "systemd",
"openrc", and "sysvinit" systems, including detection of specific
configurations via file existence checks. Adds `os` package for file
status validation.

Enhances compatibility with multiple initialization systems.

Refactors the service file restoration process to dynamically determine
service paths and names, enhancing compatibility with various Linux
distributions' service management systems.

Attempts to copy configuration files using service names first, falling
back to init script names if necessary, increasing robustness and
adaptability of the restore operation.

Introduces a dedicated backup directory for service scripts during
snapshot creation, recovery, and rollback processes. Ensures proper
backup and restoration of initialization scripts and service-related
files for improved consistency and robustness. Refactors file
operations to use dynamically resolved service paths, reducing
hardcoded dependencies.

Replaces hardcoded service names and paths with dynamically retrieved values to enhance maintainability and flexibility.

Adds checks for creating service script directories during backup and rollback to improve stability and compatibility.

Optimizes the handling of service script copying and backup paths.

在多个构建目标中添加CGO_ENABLED=0环境变量配置，
确保在不同平台下进行静态链接编译，
提升二进制文件的可移植性和运行稳定性。

当 newName 为 "." 或空字符串时，直接将源目录中的内容复制到目标目录，
增加其应用的场景。