Documents for S3 methods (of operators)

[eitsupi]

Currently, the S3 methods of the base R functions are listed in a separate category in the documentation, but as for the operators, they belong to the functions to which they are translated.

r-polars/R/expr__expr.R

Lines 170 to 179 in 2fbf67d

	#' @export
	#' @rdname Expr_add
	#' @param e1 Expr only
	#' @param e2 Expr or anything that can be converted to a literal
	"+.Expr" = function(e1, e2) {
	if (missing(e2)) {
	return(e1)
	}
	result(wrap_e(e1)$add(e2)) |> unwrap("using the '+'-operator")
	}

I think it would be more convenient to be able to easily check which functions are supported by S3, so I think it would be better to move these to the S3 category.