[Optimizer] Refactor `convert join`

[jackwener]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Now

explain select * from t1 join t2 on t1.c1 = t2.c2 where t1.c1 > 0;

It can be transformed

explain select * from t1  inner join t2 on t1.c1 = t2.c2 where t1.c1 > 0;

But the implementation is a little hack and inelegant.

We can implement it in optimizer rule instead of planner build--->plan_selection

We can refactor it and do it using the other optimizer rule combine.

Describe the solution you'd like
#2255 include many rule, some rule is preconditions.

In fact, current result convert join of should be result of some rule combine instead of we rewrite plan directly in plan_selection.

Transformation path

select * from t1 join t2 on t1.c1 = t2.c2 where t1.c1 > 0;
-- infer predicate -->
select * from t1 join t2 on t1.c1 = t2.c2 where t1.c1 > 0 and  t2.c1 > 0;
-- convert outer join -->
select * from t1 inner join t2 on t1.c1 = t2.c2 where t1.c1 > 0 and  t2.c1 > 0;

or

select * from t1 join t2 on t1.c1 = t2.c2 where t1.c1 > 0;
-- infer not null -->
select * from t1 join t2 on t1.c1 = t2.c2 where t1.c1 > 0 and t1.c1 is not null;
-- infer predicate -->
select * from t1 join t2 on t1.c1 = t2.c2 where t1.c1 > 0 and t1.c1 is not null and t2.c1 > 0 and t2.c1 is not null;
-- convert outer join -->
select * from t1 inner join t2 on t1.c1 = t2.c2 where t1.c1 > 0 and t1.c1 is not null and t2.c1 > 0 and t2.c1 is not null;

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