Describe the bug
Pest grammars can cause overflow within Pest itself.
Pest previously introduced set_call_limit to limit the total size of expressions, but this doesn't affect program stack depth.
That setting can't be used to solve this problem, as setting it to a small value would prevent parsing interesting "wide" expressions.

To Reproduce
Here's a tiny illustrative grammar. On Windows, with the default 1Mb of stack space, it fails on my machine with 300 nested parenthesis, though this limit is far lower on a more realistic grammar.

WHITESPACE = _{ " " | "\t" | "\n" | "\r" }
expression = { SOI ~ add_expr ~ EOI }
add_expr = { mul_expr ~ ("+" ~ mul_expr)* }
mul_expr = { primary ~ ("*" ~ primary)* }
primary = { number | "(" ~ add_expr ~ ")" }
number = @{ ASCII_DIGIT+ }

Expected behavior
In a perfect world, parsing wouldn't be recursive. Barring that, being able to control max recursive depth would allow users to avoid this class of issue.