Add missing SVGPointList API (#7749)
Add missing SVGPointList API (#7749)

This PR is a part of a project to add missing interfaces and interface features to BCD that are from a spec in Editor's Draft or more and is supported in at least one browser.  This particular PR adds the missing SVGPointList API, populating the results using data from the [mdn-bcd-collector](https://mdn-bcd-collector.appspot.com) project (v1.1.6).

Spec: https://svgwg.org/svg2-draft/shapes.html#InterfaceSVGPointList

IDL: https://github.com/w3c/webref/blob/master/ed/idl/SVG.idl

Tests Used: https://mdn-bcd-collector.appspot.com/tests/api/SVGPointList
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data