[fpc-pascal] Add API to official documentation search

[Ryan Joseph]

> On Nov 20, 2019, at 5:25 AM, Anthony Walter via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> 
> You said, "but its got bugs and I haven't been able to contact the developer to fix them"
> 
> What are the bugs you want fixed? 

There you are. ;) There are stray tags which are messing things up. For example:

https://docs.getlazarus.org/?method=codesearch&format=xml&phrase=List

notice all the <b> tags that are breaking up the titles.

Regards,
	Ryan Joseph