Publish minutes of 2021-08-05 meeting

[Rob--W]

Generated from https://docs.google.com/document/d/1QkwhEMtMS67JBUkl_WVPZ4lRSKoWcQNlLJSf_GwSXg8/edit

Using a process similar to #23.

During this meeting, we discussed #50, #21, #13, #43, #45. We have also agreed to new file issues (considering a common test suite to support interoperability; decomposing the manifest.json work in actionable tasks that other WECG members can work on as #53).

[Rob--W]

I did not only publish meeting notes, but also adjusted the link to the meeting instructions as suggested at the end of the meeting.