Abstract block executor output

[emhane]

Closes #11108

• Removes optimism feature from reth-auto-seal-consensus.
• Defines trait BlockExecOutput, and removes constraint of specific type BlockExecutionOutput off Executor::Output.
• Adds trait method BlockExecOutput::receipts_root_slow.
• Allows configuring network specific receipts root calculation at sdk level without adding another associated type to NodeAddOns, by sensibly configuring it as part of the existing block executor component.

[emhane]

does BlockExecutorProvider::Executor have to have GAT for db? it's a blocker, since it isn't yet stable to do

impl<A, B> BlockExecutorProvider for Either<A, B>
where
    A: BlockExecutorProvider,
    B: for<DB> BlockExecutorProvider<
        Executor<DB>: Executor<DB, Output = <A::Executor<DB> as Executor<DB>>::Output>,
    >,

@mattsse

[mattsse]

this drifted too much and was premature, we need to tackle this differently after we have a way to customize block types