[Feature]: Support for Custom Line Break Characters

[cfbber]

Background

During usage, it was discovered that the imported text only supported \n as the line break character. If the original data contained \n, the import process would fail.

Changes Made

• Modified the default line break character.
• Added support for custom line_delimiter through the header, allowing other characters to be used.
• Added support for hexadecimal special characters such as \x01.

Testing

• After modification, the changes have been running in the production environment for over two months, with more than 500 jobs executed successfully.

Notes

• Due to limitations in Go, the line break character currently supports only single characters, such as |. For special characters, hexadecimal ASCII codes can be used.