add solr support

[softwarevamp]

Hi @dorantor, would you please add solr driver?

[dorantor]

Hi @softwarevamp, I don't have any experience with Solr. And currently don't have any project with Solr. What's even more important, I don't have time to finish PostrgeSQL array implementation which is required for one of my projects.
If you really need it and have experience with Solr, you can do it by yourself. Ask for help in PHPixie chat if you need some.

[softwarevamp]

when query solr with pagination i don't want a count query first, because the select query returns a numFound(count). but i have no idea how to avoid the countQuery. the database library is so complex i am new to it and not familiar with it yet. :)

[dorantor]

I recommend you to ask some help in chat :)
And maybe @dracony, as an author can give you some advice here.

[softwarevamp]

@dracony when paging solr results the client has two trips, one for count and the other for items. is this normal in comparison to SQL or mongo?