convert coerce tests to lab

Updates coercion fixtures to fix broken tests.

Add: ability to specify custom coercion methods by name If `options.coerce` is an object, coercion is `true` but any attribute/tag first checks the coercion object for a custom function under the tag/attribute name, before falling back to the default coercion.

Adds basic sanitization and re-rewrites coercion and trimming

Fix file name

Add test