Console lexer: use whitespace after prompt

[alexanderweiss]

Changed the console lexer to use the whitespace token after the prompt instead of using a normal text token. This is useful to allow applying custom CSS to the whitespace (e.g. disabling selection).

Input:

~$ gpg2 

Original output:

<span class="gp">~$</span> gpg2 

New output:

<span class="gp">~$</span><span class="w"> </span>gpg2 

[pyrmont]

@jneen I'm not very familiar with the console lexer and so wanted to pick your brain a little. In a previous PR, you mentioned that using the Text::Whitespace token will produce a separate container (a fact that this PR takes advantage of). I assume that's not problematic but would appreciate if you could confirm?

[pyrmont]

Having spent a bit more time looking at this now, the change makes sense to me :)

[alexanderweiss]

Great! Thanks for picking up maintenance!

[pyrmont]

@alexanderweiss Thanks for the submission and I'm sorry it's taken so long to get to this >_< We're updating Rouge on a two-week basis at the moment and the next release, v3.8.0, is planned for Tuesday. This will go out as part of that. Thanks again!