Add a release checklist for overrides, including VisualizerOverrides

tests/python/release_checklist/check_blueprint_overrides.py

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+from __future__ import annotations
+
+import os
+from argparse import Namespace
+from uuid import uuid4
+
+import rerun as rr
+import rerun.blueprint as rrb
+
+README = """\
+# Blueprint overrides
+
+This checks that overrides work as expected when sent via blueprint APIs.
+
+Expected behavior:
+* The `sin` plot should be a blue line (set via defaults)
+* The `cos` plot should be a green points with cross markers (set via overrides)
+"""
+
+
+def log_readme() -> None:
+    rr.log("readme", rr.TextDocument(README, media_type=rr.MediaType.MARKDOWN), static=True)
+
+
+def log_plots() -> None:
+    from math import cos, sin, tau
+
+    for t in range(0, int(tau * 2 * 10.0)):
+        rr.set_time_sequence("frame_nr", t)
+
+        sin_of_t = sin(float(t) / 10.0)
+        rr.log("plots/sin", rr.Scalar(sin_of_t))
+
+        cos_of_t = cos(float(t) / 10.0)
+        rr.log("plots/cos", rr.Scalar(cos_of_t))
+
+    rr.send_blueprint(
+        rrb.Blueprint(
+            rrb.Grid(
+                rrb.TextDocumentView(origin="readme", name="Instructions"),
+                rrb.TimeSeriesView(
+                    name="Plots",
+                    defaults=[rr.components.Color([0, 0, 255])],
+                    overrides={
+                        "plots/cos": [
+                            rrb.VisualizerOverrides("SeriesPoint"),
+                            rr.components.Color([0, 255, 0]),
+                            # TODDO(#6670): This should just be  rr.components.MarkerShape.Cross
+                            rr.components.MarkerShapeBatch("cross"),
+                        ],
+                    },
+                ),
+            )
+        )
+    )
+
+
+def run(args: Namespace) -> None:
+    rr.script_setup(args, f"{os.path.basename(__file__)}", recording_id=uuid4())
+
+    log_readme()
+    log_plots()
+
+
+if __name__ == "__main__":
+    import argparse
+
+    parser = argparse.ArgumentParser(description="Interactive release checklist")
+    rr.script_add_args(parser)
+    args = parser.parse_args()
+    run(args)