Enables default ag-grid style filtering on async tables by creating a filter function from filterModel data.

Minor adjustment to return the invokelatest wrapped filter on the first use. The world will be ready for the actual function on subsequent uses.

Added code to sanitize column access and partially specified ranges. Optimize dates via preparsing.

Handle column names and search text with quote characters more defensively.

Updated to generate expressions directly rather than parsing a string.

@code_typed shows functions like build_date returning type Union{Missing, Expr} when not using OptionaExpr, but Any after a type assertion when using OptionalExpr. Type inference is better than type assertion if the code is correct I guess.