FIP 0045: Add & modify new types

[jennijuju]

• [x] #71
  • Create a new "actor" in builtin/v9.
  • Match the token actor's state
  • Add the TokenActor to any lists of actors (eg. MethodNum)
• [x] #72
  • Match changes in here.
  • New types: Claim, Allocation, and tables for them
  • New method params & returns
• [x] #74
• [x] #73
  • Mostly around SectorExpirationExtension
• [x] #75
  • State changes (see diff)
  • PendingAllocations is a new HAMT
  • Deal State has an allocation ID added to it
  • ActivateDeals params changed ~- [ ] The DataCap type, while still a big.Int is having its alias change from StoragePower to TokenAmount...this will need some handling~

[jennijuju]

(check if we need to do anything for DataCap type