[1.x] Remove unused capture groups

[c0nst4ntin]

With this Pull Request some of the capture groups that are not needed will be turned into non-capture groups.

From my research, I can't see any major performance difference in the two methods, but I guess it can't hurt to add this.

FYI: I tested this with the existing test in this repository but not in any real word projects or scenarios

[milwad-dev]

I can't understand what is the benefits of this changes?

[c0nst4ntin]

In Regex, anything in brackets "()" is considered a capture group. This means that you can later reference the matched text using a backrefence like "<1>". By using?: you can specify that the group should only be used as a group and not capture the match.

Source: https://www.regular-expressions.info/refcapture.html

According to some threads, there is a slight performance difference in the usage (which would make sense to me as well):
https://stackoverflow.com/questions/33243292/capturing-group-vs-non-capturing-group

In theory, this should simply improve Regex performance (although it is probably only noticeable in very extreme cases).

[milwad-dev]

Just add this for another rules

[c0nst4ntin]

Is there any further way I can assist?

In some classes this was already added: https://github.com/milwad-dev/laravel-validate/blob/1.x/src/Rules/ValidCamelCase.php#L18

In some it can't be added, as it needs to be a capture group: https://github.com/milwad-dev/laravel-validate/blob/1.x/src/Rules/ValidHtmlTag.php#L18

And in some cases, the regex was quite complex so I didn't want to make it even more complex: https://github.com/milwad-dev/laravel-validate/blob/1.x/src/Rules/ValidIpAddressIPV6.php#L18

[milwad-dev]

Thanks!