增加 `Backslash Escape/Unescape` 功能

[bytemain]

在开发中，有些文本复制出来是带 \n 的，这个时候想把 \n 去掉，有个工具的话就很方便。

Example

Input:

\n\tallow.auto.create.topics = true\n\tauto.commit.interval.ms = 5000\n\tauto.offset.reset = latest\n\tbootstrap.servers = [kafka.service.consul:9092]\n\tcheck.crcs = true\n\tclient.dns.lookup = default\n\t

Output:

    allow.auto.create.topics = true
    auto.commit.interval.ms = 5000
    auto.offset.reset = latest
    bootstrap.servers = [kafka.service.consul:9092]
    check.crcs = true
    client.dns.lookup = default

[bytemain]

https://en.wikipedia.org/wiki/Escape_character

JavaScript uses the \ (backslash) as an escape character for:[1][2]

• \' single quote
• \" double quote
• \\ backslash
• \n new line
• \r carriage return
• \t tab
• \b backspace
• \f form feed
• \v vertical tab (Internet Explorer 9 and older treats '\v as 'v instead of a vertical tab ('\x0B). If cross-browser compatibility is a concern, use \x0B instead of \v.)
• \0 null character (U+0000 NULL) (only if the next character is not a decimal digit; else it is an octal escape sequence)
• \xFF character represented by the hexadecimal byte "FF"

[bytemain]

可以用这两个库：

• https://www.npmjs.com/package/char-unescape
• https://www.npmjs.com/package/char-escape

[baiy]

@bytemain 收到

可以用这两个库：

• https://www.npmjs.com/package/char-unescape
• https://www.npmjs.com/package/char-escape

[bytemain]

感谢大佬，希望之后可以更新一下 utools 插件带上这个特性