synchronizer: each block on L1 stored on DB must have a bool that says if the block need to be checked or not

[joanestebanr]

Rationale

When insert a block on node DB must mark:

• If, in the moment of the request, the block_number is over finalized block need to be checked
• If a second process verifiy the hash of this block when the block_number is below L1 finalized block mark it

Implementation

Add a column called checked:

• If is created below L1 finalized mark as true because don't need to be verified