add missing test files

geom/limit/clipping.geojson

@@ -0,0 +1,8 @@
+{
+"type": "FeatureCollection",
+"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
+                                                                                
+"features": [
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+]
+}