Add an option that generates DDL instruction without the ';' at the end of the instruction

[starnowski]

Currently, DDL statements are generated with ';' character at the end of the statement for example:

CREATE OR REPLACE FUNCTION set_current_tenant_id(VARCHAR(255)) RETURNS VOID AS $$
BEGIN
PERFORM set_config('posmulten.tenant_id', $1, false);
END
$$ LANGUAGE plpgsql
VOLATILE;

after setting this option the DDL instruction should look like the below example:

CREATE OR REPLACE FUNCTION set_current_tenant_id(VARCHAR(255)) RETURNS VOID AS $$
BEGIN
PERFORM set_config('posmulten.tenant_id', $1, false);
END
$$ LANGUAGE plpgsql
VOLATILE

[starnowski]

Use decorator component added in #283