Exclude code blocks from Blade compilation

[Jhnbrn90]

The issue

This PR addresses issue #168, in which an Exception is thrown when using Blade syntax within code blocks. This issue arises from the fact that currently the whole page is rendered through a Blade compiler, including the code blocks.

What has been done

• Added compileBlade method, in which code blocks are first stripped from the documentation content after which compilation is performed and finally the stubbed out code blocks are replaced by their original contents.
• Stored matching and replacement regex patterns in config.
• Added a PHPunit test, asserting blade syntax is not compiled within code blocks.

Example of code block with Blade syntax

Please let me know if you have any suggestions or additions.

PS: currently the tests are failing, see #205.

[mbroadhead]

I am actually using blade directives in my code blocks. I created an @apiurl('/some/route') blade directive that generates the full url based on the current api version. Many times I show an example in curl like so:

curl @apiurl('/some/route')

With would then render as:

curl https://example.com/api/1.0/some/route

It sounds like this pull request would break what I'm doing. Can you think of an alternative to what I'm doing that would work with your pull request or could we have a config option to enable/disable your feature? Something like config('larecipe.verbatim_code_blocks') = true|false

[Jhnbrn90]

@mbroadhead I'm willing to do that, only if @saleem-hadad confirms plans to merge this PR at all.