Support compiled queries in treesit-query-capture

Support compiled queries in treesit-query-capture

Last commit added this new type, this commit adds functionalities.
treesit.el only has documentation changes.

* lisp/treesit.el (treesit-query-in, treesit-font-lock-settings,
treesit-defun-query): Update docstring.
* src/treesit.c (make_ts_query): New function.
(Ftreesit_query_compile): New function.
(Ftreesit_query_capture): Remove code that creates a query object and
instead either use make_ts_query or use the give compiled query.  Free
the query object conditonally.
(syms_of_treesit): New symbol.