EIP-145 Bitwise Shift

Documentation for tests/constantinople/[email protected].

Generate fixtures for these test cases for Osaka with:

fill -v tests/constantinople/eip145_bitwise_shift --fork Osaka

abstract: Test EIP-145: Bitwise shifting instructions in EVM.

Tests for  [EIP-145: Bitwise shifting instructions in EVM](https://eips.ethereum.org/EIPS/eip-145).