EIP-7516: BLOBBASEFEE instruction

Progress

• spec EIP-7516: BLOBBASEFEE instruction #167
• constraints
• tracer

Impact

• implementation of a new opcode
• needed if we support BLOBHASH
• @nkeywal : "we will implement constant value"

Notes

See with Julien/Declan if it's a fixed value like LINEA_BASE_FEE

Test vectors