relatedRecords live query operator misses hasOne links included by addRecord

[opsb]

e.g. when the following operation is processed

{op: 'add', path: 'moon/callisto', value: {id: 'callisto', relationships: {planet: {data: 'planet:jupiter'}}}

then the relatedRecords operator will ignore it because it only looks for operations that target the relationships directly, i.e. a replaceHasOne.

NB: Once fixed re-enable assertions at https://github.com/opsb/ember-orbit/blob/839b05a9629481d5f38d7649d4e18a55cbd09fab/test/tests/integration/model-test.js#L37-L38

[dgeb]

The "live query" concept has been extracted from Orbit proper and will live in wrapper libs such as ember-orbit. Systems of observation provided by frameworks such as RxJS, Ember, and Glimmer vary widely enough that equivalent live queries should be written for each.