Tron LandResource Migration.

[hujw77]

Migration

To upgrade to furnace version. We could migrate the LandResource contract.

1. Create a new LandResource contract.
2. User call stopMining and claimAllResource on old contract.
3. User call startMining on new contract to complete migration.

TODO

• Review TokenUse to ensure migration security.
• New LandResource may support proxy.
• One-Click migration contract support.
• Frontend and Backend support.