support "allowSingleLine" option

[mmorgan4x]

support for option "allowSingleLine"

This rule has an object option for an exception:
"allowSingleLine": true (default false) allows the opening and closing braces for a block to be on the same line

[ony3000]

This plugin is theoretically equivalent to applying ESLint formatting (brace-style only) after applying Prettier formatting.

Therefore, currently, it is not possible to tell from the intermediate text (Prettier formatted) whether the original text was written as a single line, so research is needed to implement the feature.

[nogeenkopjethee]

In my code, I sometimes have empty methods, like this:

const test = () => {};

The brace-style rule in ESLint and this plugin will place the brace on the second line, like this:

const test = () => 
{};

Is it possible to allow single line brackets when the function body is empty?

[ony3000]

@nogeenkopjethee This is possible if the allowSingleLine option is implemented.