EPROD-1197 added block confirmation strategy in EVM canister

[veeso]

https://infinityswap.atlassian.net/browse/EPROD-1197

[ufoscout]

This has to be changed as discussed:

impl<M: Memory> BlockConfirmer<M> {
    /// Create a new block confirmer with the given strategy.
    pub fn new(memory_manager: &dyn MemoryManager<M, u8>) -> Self {
        Self {
            strategy: StableCell::new(
                memory_manager.get(BLOCKCHAIN_BLOCK_CONFIRMER_STRATEGY_MEMORY_ID),
                BlockConfirmationStrategy::None,
            )
            .expect("failed to init block confirmer strategy cell"),
            pow_cache: Default::default(),
        }
    }

In addition, just scripts need to be fixed