MDEV-32101 CREATE PACKAGE [BODY] for sql_mode=DEFAULT

This patch adds PACKAGE support with SQL/PSM dialect for sql_mode=DEFAULT:

- CREATE PACKAGE
- DROP PACKAGE
- CREATE PACKAGE BODY
- DROP PACKAGE BODY
- Package function and procedure invocation from outside of the package:
    -- using two step identifiers
    SELECT pkg.f1();
    CALL pkg.p1()

    -- using three step identifiers
    SELECT db.pkg.f1();
    CALL db.pkg.p1();

This is a non-standard MariaDB extension.

However, later this code can be used to implement
the SQL Standard and DB2 dialects of CREATE MODULE.

mysql-test/suite/compat/oracle/t/sp-package.test

@@ -2854,13 +2854,18 @@ END test1;
 $$
 DELIMITER ;$$
 
-
+#
+# A VIEW created with sql_mode=ORACLE, calling a package routine
+#
 SET sql_mode=ORACLE;
 CREATE VIEW v_test AS SELECT 1 AS c1 FROM DUAL WHERE 1=test1.f_test();
 SELECT * FROM v_test;
 --vertical_results
 SHOW CREATE VIEW v_test;
 --horizontal_results
+#
+# It also works with sql_mode=DEFALT
+#
 SET sql_mode=DEFAULT;
 SELECT * FROM v_test;
 --vertical_results
@@ -2868,10 +2873,24 @@ SHOW CREATE VIEW v_test;
 --horizontal_results
 DROP VIEW v_test;
 
-
+#
+# A VIEW created with sql_mode=DEFAULT, calling a package routine
+#
 SET sql_mode=DEFAULT;
---error ER_SP_DOES_NOT_EXIST
 CREATE VIEW v_test AS SELECT 1 AS c1 FROM DUAL WHERE 1=test1.f_test();
+SELECT * FROM v_test;
+--vertical_results
+SHOW CREATE VIEW v_test;
+#
+# It also works with sql_mode=ORACLE
+#
+--horizontal_results
+SET sql_mode=ORACLE;
+SELECT * FROM v_test;
+--vertical_results
+SHOW CREATE VIEW v_test;
+--horizontal_results
+DROP VIEW v_test;
 
 
 SET sql_mode=ORACLE;