Faster synchronization by fetching only block headers

fix the invalid goarch build

Add configuration option to choose recommended fee strategy, and add …

Generating automatically releases with Goreleaser

Document synchronizer, node and coordinator

add AGPLv3 License

Add minimum documentation of serveapi command

fix the application initialization flags

Bound the filter of init SC events by blocks

When querying the init event for each smart contract, bound the search from
block genesis-24h to block genesis.  Otherwise, this query in geth synced to
mainnet takes too long.

Move apitypes & stateapiupdater into api dir

Add API versioning

Add account_state view

Update TxSel selection to prioritize the forgable

Previous to this commit, there were cases where being
len(nonForgableL2Txs)>maxL2Txs and nonForgableL2Txs have bigger fee than
forgableL2Txs, the forgableTxs where never forged, neither the
nonForgableTxs.  Now, the TxSelector first forges the forgableTxs (which
are forgable for the initial state of the accounts (balances & nonces),
and then the nonForgableL2Txs, which may be unblocked once the forgable
ones have been processed.

API change names and add poolLoad, add maxFeeUSD

Add pending L1 txs to API

Add config parameter  ForgeOncePerSlotIfTxs

Create a Makefile for build using -ldflags and useful commands

Store *big.Int as DECIMAL in sql

Not count txs marked as external_delete to reach MaxTxsPool

Fix average transaction fee calculation

Fix API /state collected fees unmarshal

Fix Synchronizer not setting slot.ForgerCommitment to true

New configuration Coordinator configuration parameter `ForgeOncePerSlotIfTxs`:
ForgeOncePerSlotIfTxs will make the coordinator forge at most one batch per
slot, only if there are included txs in that batch, or pending l1UserTxs in the
smart contract.  Setting this parameter overrides `ForgeDelay`,
`ForgeNoTxsDelay`, `MustForgeAtSlotDeadline` and `IgnoreSlotCommitment`.

Also restructure a bit the functions that check policies to decide whether or
not to forge a batch.

separated the policy to decide if we forge batch or not

Allow serving API only via new cli command