Moved sql and test files

test/expected/btree.out

@@ -0,0 +1,19 @@
+SET client_min_messages = warning;
+CREATE EXTENSION IF NOT EXISTS vector;
+SET enable_seqscan = off;
+CREATE TABLE t (val vector(3));
+INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
+CREATE INDEX ON t (val);
+SELECT * FROM t WHERE val = '[1,2,3]';
+   val   
+---------
+ [1,2,3]
+(1 row)
+
+SELECT * FROM t ORDER BY val LIMIT 1;
+   val   
+---------
+ [0,0,0]
+(1 row)
+
+DROP TABLE t;