Implement DSMR Chain Functionality

[aaronbuchwald]

The chain type ties together the required functionality of building/parsing/executing/accepting blocks (as well as PreExecute for the mempool), which is used by the VM.

Implement the equivalent functionality for the DSMR package (excluding pre-execute since this will be handled at the mempool layer):

type Chain interface {
	// BuildBlock produces a new chunk based block skipping any duplicates that have either already been accepted
	// or are included in the processing ancestry of parent.
	BuildBlock(ctx context.Context, parent ExecutedBlock) (ExecutionBlock, error)
	// Execute executes the given block with the provided parent (guaranteed to have been executed successfully).
	// Execute verifies each chunk certificate as valid within the current epoch and 
	Execute(ctx context.Context, parentBlock ExecutedBlock, block ExecutionBlock) (ExecutedBlock, error)
	// ParseBlock returns an execution block that can be executed against its parent.
	ParseBlock(ctx context.Context, bytes []byte) (ExecutionBlock, error)
	// AcceptBlock accepts the given executed block, re-assembles the inner block, and executes the inner block.
	AcceptBlock(ctx context.Context, parent AcceptedBlock, block ExecutedBlock) (AcceptedBlock, error)
}

[lattaai9]

Hello, I tried to solve the issue.

This is what I did:

Implement the equivalent functionality for the DSMR package as described in the criteria. This includes BuildBlock, Execute, ParseBlock, and AcceptBlock methods.

You can review changes in this commit: lattaai9@ef3cc44.

Caution

Disclaimer: The commit was created by Latta AI and you should never copy paste this code before you check the correctness of generated code. Solution might not be complete, you should use this code as an inspiration only.

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