feat(globe): picks on input payloads

input.on('click'|'doubleClick'|'move', fn, { pick, drill }) delivers
{ …event, picked, drilled }: PickResult { id, owner, instance, primitive
(Cesium) } names the mover set (and instance) or line hit. One pick (and
one drill, as deep as the deepest listener) per event, shared by its
listeners; moves with picks are coalesced to one delivery per frame with
the latest position (src/globe/pickDelivery.js). Option checks in the
contract (normalizeInputOptions).

- Cesium: scene.pick / drillPick, and the picker names the owner: movers
  map billboards, points and models to their set and instance, lines
  their primitives to the line.
- Navara: a click with pick takes Navara's GPU pick of the same gesture
  (featureClick; its pick helper answers on the same pointerup, usually
  before the engine's click, so a fresh answer waits for it; otherwise
  the click waits up to 250 ms, then the CPU pick). Navara 0.2.1 answers
  clicks in quick succession with the first click's pick: a GPU answer
  whose instance is not drawn near the click is stale and the CPU pick
  answers. Hover, drill and the synchronous picker.pick/drillPick are CPU
  picks (src/globe/cpuPicks.js) of pickable mover sets and pickable lines
  (within half the width + 3 px), behind the globe excluded, nearest
  first; lines are picked on the CPU after an empty GPU answer.
  picker.clickStats() (Navara only) counts the answers and latencies.
- The fake engine picks its own movers and lines on the CPU unless
  scripted.
- The contract suite clicks with real pointer events (puppeteer) on both
  engines: a sprite is picked with its owner and instance, the map picks
  nothing, two sprites in one place drill both, a line is picked, a
  hover picks the sprite under it. Navara, 20 clicks: payload p50 2.8 ms,
  p95 4.1 ms after the click (puppeteer dispatch included), 20/20 GPU
  answers. The Cesium harness keeps the first-run card closed.

src/globe/cesium/movers.test.mjs

@@ -221,3 +221,27 @@ test('models load per instance and follow position and orientation', async () =>
   set.destroy();
   assert.equal(models.destroyed, true);
 });
+
+test('a pick of a billboard or point names its set and instance', async () => {
+  const viewer = createFakeViewer();
+  const { factories, made } = fakeFactories();
+  const { movers, identify } = createCesiumMovers(viewer, { factories });
+  const set = movers.createSet({
+    id: 'sats',
+    kind: 'point',
+    capacity: 3,
+    point: { sizePx: 4 },
+  });
+  set.set(0, { position: at(1) });
+  set.set(1, { position: at(2), pickId: 25544 });
+  set.setCount(2);
+  set.commit();
+  const [, second] = made.find((c) => c.kind === 'points').items;
+  assert.deepEqual(identify({ primitive: second, id: 25544 }), {
+    owner: 'sats',
+    instance: 1,
+  });
+  assert.equal(identify({ primitive: {}, id: 'x' }), null);
+  set.destroy();
+  assert.equal(identify({ primitive: second, id: 25544 }), null);
+});