Added support for bigint, text, and varchar [skip ci]

sql/vector--0.6.1--0.7.0.sql

@@ -1,6 +1,14 @@
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "ALTER EXTENSION vector UPDATE TO '0.7.0'" to load this file. \quit
 
+CREATE OPERATOR CLASS vector_bigint_ops
+	DEFAULT FOR TYPE bigint USING hnsw AS
+	OPERATOR 2 = (bigint, bigint);
+
 CREATE OPERATOR CLASS vector_integer_ops
 	DEFAULT FOR TYPE integer USING hnsw AS
 	OPERATOR 2 = (integer, integer);
+
+CREATE OPERATOR CLASS vector_text_ops
+	DEFAULT FOR TYPE text USING hnsw AS
+	OPERATOR 2 = (text, text);

sql/vector.sql

@@ -293,6 +293,14 @@ CREATE OPERATOR CLASS vector_cosine_ops
 
 -- hnsw attributes
 
+CREATE OPERATOR CLASS vector_bigint_ops
+	DEFAULT FOR TYPE bigint USING hnsw AS
+	OPERATOR 2 = (bigint, bigint);
+
 CREATE OPERATOR CLASS vector_integer_ops
 	DEFAULT FOR TYPE integer USING hnsw AS
 	OPERATOR 2 = (integer, integer);
+
+CREATE OPERATOR CLASS vector_text_ops
+	DEFAULT FOR TYPE text USING hnsw AS
+	OPERATOR 2 = (text, text);