feat(endtoend/testdata): added two sqlite CAST tests and rearranged postgres tests for same (#2551)

Related to discussion in #2473 (comment)

Author: andrewmbenton

internal/endtoend/testdata/func_call_cast/pgx/v4/go/db.go renamed to internal/endtoend/testdata/func_call_cast/postgresql/pgx/v4/go/db.go

@@ -0,0 +1,2 @@
+-- name: Demo :one
+SELECT CAST(CHAR(1,2,3,4,5) AS BLOB) AS col1

internal/endtoend/testdata/func_call_cast/pgx/v4/go/models.go renamed to internal/endtoend/testdata/func_call_cast/postgresql/pgx/v4/go/models.go

@@ -0,0 +1,12 @@
+{
+	"version": "1",
+	"packages": [
+		{
+			"path": "go",
+			"engine": "sqlite",
+			"name": "querytest",
+			"schema": "query.sql",
+			"queries": "query.sql"
+		}
+	]
+}

internal/endtoend/testdata/func_call_cast/pgx/v4/go/query.sql.go renamed to internal/endtoend/testdata/func_call_cast/postgresql/pgx/v4/go/query.sql.go

@@ -0,0 +1,4 @@
+CREATE TABLE foo (bar TEXT NOT NULL);
+
+-- name: SelectColumnCast :many
+SELECT CAST(bar AS BLOB) FROM foo;

internal/endtoend/testdata/func_call_cast/pgx/v4/query.sql renamed to internal/endtoend/testdata/func_call_cast/postgresql/pgx/v4/query.sql

@@ -0,0 +1,12 @@
+{
+	"version": "1",
+	"packages": [
+		{
+			"path": "go",
+			"engine": "sqlite",
+			"name": "querytest",
+			"schema": "query.sql",
+			"queries": "query.sql"
+		}
+	]
+}