Add option to define a minimal indentation

Hi 👋
I don't know if many people would be interested, I think it would be nice to have an option to define a minimal indentation. like :

--minimal-tab-indent: <Number> (default = 0)

Who, according to --tab-width and --use-tabs would give :
Input:

<?php

array_map(function($arg1,$arg2) use ( $var1, $var2 ) {
    return $arg1+$arg2/($var+$var2);
}, array("complex"=>"code","with"=>
    function() {return "inconsistent";}
,"formatting"=>"is", "hard" => "to", "maintain"=>true));

Output:

// With --tab-width=4, --use-tabs=false and --minimal-tab-indent=1
<?php

    array_map(
        function ($arg1, $arg2) use ($var1, $var2) {
            return $arg1 + $arg2 / ($var + $var2);
        },
        [
            "complex" => "code",
            "with" => function () {
                return "inconsistent";
            },
            "formatting" => "is",
            "hard" => "to",
            "maintain" => true,
        ]
    );

I know it's a really marginal addition but it makes me anxious not to have this indentation that I always use in all my projects 😭

まず、plugin-php が --tab-width と --use-tabs をどのように処理しているかを確認し、次に issue の PHP の例をフォーマットして現在のインデントの動作を理解します。関連するタブ幅およびタブ使用設定全体で、出力が要求された例と一致する最小限のインデントオプションを定義し、文書化できれば完了です。