Unify to expose symbol for Field

Issue type

Feature Request

Current behavior?

Some exposes field type as F and others as Field.

https://github.com/kroma-network/tachyon/blob/d94cd9aa90463fec16681c25daaf6405b0c9ec6e/tachyon/crypto/hashes/sponge/sponge.h#L71

https://github.com/kroma-network/tachyon/blob/d94cd9aa90463fec16681c25daaf6405b0c9ec6e/tachyon/crypto/commitments/univariate_polynomial_commitment_scheme.h#L19

Expected Behavior?

Unifying how to expose type for Field