[fm-equalize] Extend functionalities

[mhs4670go]

What

Let's support more features for fm-equalize.

• Parameterize alpha of SmoothQuant.
• Think about how to apply the algorithm to Layernorm.

Why

Parameterize alpha of SmoothQuant.

Current implementation fixes alpha value of SmoothQuant. But, best alpha may vary depending on the models. Let's parameterize it. Users would be able to set their best alpha then.

Think about how to apply the algorithm to Layernorm.

Layernorm decomposes into Mul and Add. Therefore, if the circle to apply is optimized first, such mul and add are fused into other ops, which makes it impossible to apply SmoothQuant. Therefore, we need to consider the order of the sequences.

[jinevening]

It seems that the two issues are different. Why not making separate issues ?

[mhs4670go]

@jinevening This issue might be a parent issue. I'll split them when they should be.