docs(examples): split crossfilter example into filter/highlight

examples/specs/interactive_crossfilter.vl.json

@@ -0,0 +1,26 @@
+{
+  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
+  "data": {
+    "url": "data/flights-2k.json",
+    "format": {"parse": {"date": "date"}}
+  },
+  "transform": [{"calculate": "hours(datum.date)", "as": "time"}],
+  "repeat": {"column": ["distance", "delay", "time"]},
+  "spec": {
+    "layer": [{
+      "params": [{
+        "name": "brush",
+        "select": {"type": "interval", "encodings": ["x"]}
+      }],
+      "transform": [{"filter": {"param": "brush"}}],
+      "mark": "bar",
+      "encoding": {
+        "x": {
+          "field": {"repeat": "column"},
+          "bin": {"maxbins": 20}
+        },
+        "y": {"aggregate": "count", "axis": null}
+      }
+    }]
+  }
+}

site/_data/examples.json

@@ -911,9 +911,13 @@
         "name": "interactive_overview_detail",
         "title": "Overview and Detail"
       },
+      {
+        "name": "interactive_crossfilter",
+        "title": "Crossfilter (Filter)"
+      },
       {
         "name": "interactive_layered_crossfilter",
-        "title": "Crossfilter"
+        "title": "Crossfilter (Highlight)"
       },
       {
         "name": "interactive_splom",