PreContract Testnet Hardfork

This release adds the preDeployedContract hardfork, which changes the name and symbol of the preDeployed contract WBNB(0x4200000000000000000000000000000000000006). It also removes the preDeployed contract GovernanceToken(0x4200000000000000000000000000000000000042).

Changelog

• ci: add docker release workflow to build and release docker image #3
• feat: add preDeployedContract hardfork #5