Separate balance and nonce into different memory locations

[hai-rise]

pevm/src/lib.rs

Lines 33 to 34 in 816c6e6

	// TODO: Separate an account's balance and nonce?
	Basic(Address),

pevm/src/lib.rs

Line 72 in 816c6e6

Basic(AccountBasic),

• Potential gain: reduce write records as recipients don't need to record unchanged nonce anymore.
• Potential loss: increase read friction as now we need 2 locks to read balance and nonce instead of reading both at once, and all basic requests need both.