Snowddl

- Fix grants not being revoked properly for object types which do not support FUTURE GRANTs.

- Added parameters `partition_type` and `table_format` for `EXTERNAL TABLE` object type.
- `location.file_format` is now required parameter for `EXTERNAL TABLE`.

- `OWNERSHIP` on `STAGE` objects are no longer granted to schema OWNER role via FUTURE GRANT. All stages will be owned directly by admin role instead. Otherwise, it is not possible to use external stages without explicit grant of `USAGE` on `STORAGE_INTEGRATION` object to the current role or schema owner role, which is not desirable.

In order to fix `OWNERSHIP` on stages, you may execute the following expression for each affected schema with stages and restart SnowDDL to re-apply other grants:


GRANT OWNERSHIP ON ALL STAGES IN SCHEMA <database>.<schema> TO ROLE <snowddl_admin_role> REVOKE CURRENT GRANTS;

- Revert to session to original `WAREHOUSE` after execution of `WarehouseResolver` if necessary. Snowflake implicitly switches to newly created `WAREHOUSE` after successful CREATE statement, which is not desirable for the rest of the session.

- `SHOW PROCEDURES` was replaced with `SHOW USER PROCEDURES`, in line with Snowflake release notes.
- Added `owner_schema_read`, `owner_schema_write` parameters for schema. If specified, grants READ or WRITE roles from other schemas to the OWNER role of the current schema. It helps to make objects in other schemas accessible for `VIEWS` and `PROCEDURES`. Normally OWNER role can only access objects in the current schema.
- Dependency management was enabled for schema roles.

- MD5 markers which are automatically generated for `STAGE FILES` are now uploaded directly using `file_stream` option for `.execute()` command of Snowflake Python Connector. Temporary directory is no longer used.
- `file_stream` option is now available for `.execute_safe_ddl()`, `.execute_unsafe_ddl()`. It might be used in future for more advanced operations with contents of internal stages.