Adjust `ignoreSpans` to allow filtering on arbitrary attributes

[Lms24]

Currently, the SDK's ignoreSpans option allows filtering on span descriptionand op. We should extend the option to:

• add first class support for name (which aliases description)
• allow to filter on arbitrary attributes. If a span matches the attributes in the ignoreSpans filter object, it should be discarded.

All of this is spec'd out in develop, including special cases for string vs. non-string attributes

[linear-code]

JS-2203