Remove duplicates types in forest.

[lemmih]

Issue summary

• These types were copied to fvm_shared and should be removed from forest:
  • [x] encoding/src/bytes.rs: BytesDe
  • [x] encoding/src/bytes.rs: Byte32De
  • [x] encoding/src/bytes.rs: BytesSer
  • [x] types/src/sector/mod.rs: SectorSize
  • [x] types/src/sector/mod.rs: SectorID
  • [x] types/src/sector/registered_proof.rs: RegisteredPoStProof
  • [x] types/src/sector/registered_proof.rs: RegisteredSealProof
  • [x] types/src/sector/registered_proof.rs: RegisteredAggregateProof
  • [x] types/src/sector/post.rs: SectorInfo
  • [x] types/src/sector/post.rs: PoStProof
  • [x] types/src/sector/post.rs: WinningPoStVerifyInfo
  • [x] types/src/sector/post.rs: WinningPoStVerifyInfo
  • [x] types/src/sector/post.rs: OnChainWindowPoStVerifyInfo

Other information and links

[LesnyRumcajs]

There are some spaghetti dependencies that need to be taken care of first, need to get rid of Forest's HAMT and AMT in favour of FVM ones.