[Feature] multiple tables to one

[hantmac]

feature description :

such as we have these tables that need to be synchronized.
mysql tables
a_0
a_1
b_0
b_1
c

databend tables
a
b
c

We can add two parameters to achieve this effect.
--including-tables="a_.|b_.|c"
--multi-to-one-origin="a_.|b_."
--multi-to-one-target="a|b"

Implementation principle :
1.Create only one table
2.Multiple tables to one side output stream