Add funtionality to allow providing open API parameters without using attributes

Currently the only way to define openapi parameters is using the openapi attributes on the function method. I'd like to be able to customise the way the open api parameters are discovered since the code i have doesn't need to use the attributes and can pull the parameter details directly from the method parameters. This is done using custom bindings similar to the ones available in AspNet (ie. FromBody, FromQuery, etc).

Possible implementation would be to add additional properties to the `IOpenApiConfigurationOptions` to allow for this customisation.

Note, conversation moved here from other issue to allow for clearer discussion.

Start with IOpenApiConfigurationOptions and trace the existing attribute-based OpenAPI parameter discovery path. Define how configurable discovery should obtain parameter details from method parameters and custom bindings such as FromBody or FromQuery, then verify that parameters can be generated without attributes.

Written by the indexing model from the issue text.