chore: use the impala folder for generic directory-level reads (#9)

Co-authored-by: Chloe He <chloe@chloe-mac.lan>

Author: chloeh13q

impala/avro/tpch/region/region.avro renamed to directory/avro/tpch/region/region.avro

@@ -0,0 +1,6 @@
+id,geo_point,geo_linestring,geo_polygon,geo_multipolygon
+1,"POINT (0 0)","LINESTRING (0 0, 1 1)","POLYGON ((30 10, 40 40, 20 40, 10 20, 30 10))","MULTIPOLYGON (((30 20, 45 40, 10 40, 30 20)), ((15 5, 40 10, 10 20, 5 10, 15 5)))"
+2,"POINT( 1 1)","LINESTRING (1 1, 2 2)","POLYGON ((35 10, 45 45, 15 40, 10 20, 35 10), (20 30, 35 35, 30 20, 20 30))","MULTIPOLYGON (((40 40, 20 45, 45 30, 40 40)), ((20 35, 10 30, 10 10, 30 5, 45 20, 20 35), (30 20, 20 15, 20 25, 30 20)))"
+3,"POINT( 2 2)","LINESTRING (2 2, 3 3)","POLYGON ((2.0 2.0, 3.0 3.0, 4.0 4.0, 5.0 5.0, 5.0 2.0, 2.0 2.0))","MULTIPOLYGON (((2.0 2.0, 3.0 3.0, 4.0 4.0, 5.0 5.0, 5.0 2.0, 2.0 2.0)))"
+4,"POINT( 3 3)","LINESTRING (3 3, 4 4)","POLYGON ((3 3, 4 4, 5 5, 6 6, 6 3, 3 3))","MULTIPOLYGON (((3 3, 4 4, 5 5, 6 6, 6 3, 3 3)))"
+5,"POINT( 4 4)","LINESTRING (4 4, 5 5)","POLYGON ((4 4, 5 5, 6 6, 7 7, 7 4, 4 4))","MULTIPOLYGON (((4 4, 5 5, 6 6, 7 7, 7 4, 4 4)))"