feat: reverse iteration through node parents

[vanaigr]

Currently, to iterate over all parents of a given node, one would need to repeatedly call ts_node_parent() on the node itself and on each of its parents.
This creates performance issues for deep trees (neovim/neovim#24965), as ts_node_parent() itself has to iterate over all the node's parents (in reverse order, from root to the node) to find the last one.
To address this performance issue, we can introduce a function that allows iterating over the node's parents in reverse order.

[vanaigr]

I wasn't able to add any tests because the make test command fails with this message:

Regenerating typescript parser
script/generate-fixtures: line 32: 111100 Killed                  "$tree_sitter" generate src/grammar.json --no-bindings --abi=latest
make: *** [Makefile:93: test] Error 137

[clason]

Possible follow-up: expose this in the query syntax via an "anti-anchor" ..., e.g.,

(
  (struct_declaration)
  ...
  (identifier) @variable.member
)

so downstream doesn't need custom predicates like #has-ancestor?. (Although nvim-treesitter uses #not-has-ancestor? as well, so predicates are likely needed either way.)

[maxbrunsfeld]

Could you add a test for this function in node_test.rs?

[amaanq]

run cargo fmt --all @vanaigr