feat: Implement <expr>$name$replace()

[etiennebacher]

Part of #1397

[Copilot]

Pull Request Overview

This PR implements the <expr>$name$replace() method for replacing expression names using regular expressions or literal string matching.

• Adds Rust bindings for the name().replace() method from Polars
• Implements R wrapper function with regex and literal matching support
• Includes comprehensive test coverage with regex patterns and literal strings

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
R/expr-name.R	Adds expr_name_replace() function with pattern, value, and literal parameters
src/rust/src/expr/name.rs	Implements Rust FFI binding for name_replace method
tests/testthat/test-expr-name.R	Adds comprehensive tests covering regex and literal string replacement
man/expr_name_replace.Rd	Generated documentation for the new method
R/000-wrappers.R	Auto-generated R wrapper binding for Rust function
src/rust/api.h	Auto-generated C API header declaration
src/init.c	Auto-generated C initialization code for FFI
altdoc/mkdocs.yml	Updates documentation index with new method
NEWS.md	Documents new feature in changelog

[Copilot]

The @inheritParams cs__matches is inheriting malformed documentation. The cs__matches function uses Python/Sphinx-style documentation syntax that doesn't render properly in R documentation.

Consider either:

1. Documenting the pattern parameter directly with proper roxygen2 syntax:

#' @param pattern A character or something can be coerced to a string [Expr]
#' of a valid regex pattern, compatible with the [regex crate](https://docs.rs/regex/latest/regex/).

Or 2. Inherit from a function that has proper documentation, such as expr_str_contains:

#' @inheritParams expr_str_contains

This would ensure the generated .Rd file has proper hyperlinks instead of malformed \verb{regex crate <...>}_ syntax.

Suggested change

	#' @inheritParams cs__matches
	#' @param pattern A character or something that can be coerced to a string [Expr] of a valid regex pattern, compatible with the [regex crate](https://docs.rs/regex/latest/regex/).