fix: errors with CREATE TABLE LIKE when the original table has indexes

[ddh-5230]

During the process of copying a table and creating an index, the parameters passed only included the index name without binding the index to the column names, resulting in a syntax error. The root cause is that when creating the index, the Exprs value was not assigned.
Currently, the column names are extracted from the SQL and assigned to Exprs, but it only supports single-column or multi-column indexes.

fixes #26
fixes #29

[GaoYusong]

Cool! This also addresses #29.

[GaoYusong]

i've completed the review, let's fix the issues and merge it into the main branch!

[GaoYusong]

there's an error in the CI, please address it

--- FAIL: TestUnbuildableIndex (0.58s)
    --- FAIL: TestUnbuildableIndex/Failing_index_builder_still_returning_correct_results (0.40s)
        --- FAIL: TestUnbuildableIndex/Failing_index_builder_still_returning_correct_results/SELECT_i_FROM_mytable2_WHERE_i_IN_(SELECT_i_FROM_mytable2)_ORDER_BY_i (0.14s)
panic: runtime error: index out of range [0] with length 0 [recovered]
	panic: runtime error: index out of range [0] with length 0 [recovered]
	panic: runtime error: index out of range [0] with length 0

[GaoYusong]

LGTM! Congrats on your first PR! It’s a long journey to get it merged, but I hope the next one will go more quickly.