Removed redundant clones

• Changed the signature of some functions to accept arguments by ref and avoid cloning
• Removed other redundant clones

API changes

• algebra::linalg::Matrix::from_diagonal
  • diagonal: Vec<T>, &[T]
• algebra::linalg::Matrix::from_vec_vec
  • matrix: Vec<Vec<T>>, &[impl Deref<Target = [T]>]
• algebra::linalg::Matrix::from_vec_vec_unchecked
  • matrix: Vec<Vec<T>>, &[impl Deref<Target = [T]>]
• aplonk::commit
  • polynomials: Vec<P>, &[P]
  • setup: SetupParams<E>, &SetupParams<E>
• aplonk::prove
  • commit: (Vec<E::G1>, PairingOutput<E>), &(Vec<E::G1>, PairingOutput<E>)
  • polynomials: Vec<P>, &[P]
  • shards: Vec<Shard<E::ScalarField>>, &[Shard<E::ScalarField>]
  • points: Vec<E::ScalarField>, &[E::ScalarField]
  • params: SetupParams<E>, &SetupParams<E>
• fec::decode
  • shards: Vec<Shard<F>>, &[Shard<F>]
• fri::encode
  • bytes: &[u8], &[u8]
  • evaluations: Vec<Vec<F>>, &[Vec<F>]
• fri::prove
  • evaluations: Vec<Vec<F>>, Vec<fec::Shard<F>>
  • evaluations: &[Vec<F>], &[fec::Shard<F>]
• fri::verify
  • block: Block<F, H>, &Block<F, H>
• fri:decode
  • blocks: Vec<Block<F, H>>, &[Block<F, H>]
• kzg::prove
  • commits: Vec<kzg10::Commitment<E>>, &[kzg10::Commitment<E>]
  • polynomials: Vec<P>, &[P]
  • shards: Vec<Shard<E::ScalarField>>, &[Shard<E::ScalarField>]
  • points: Vec<E::ScalarField>, &[E::ScalarField]
  • powers: kzg10::Powers<E>, &kzg10::Powers<E>
• zk::trim
  • pp: kzg10::UniversalParams<E>, &kzg10::UniversalParams<E>