Update coordinator, call all api update functions

- Common:
	- Rename Block.EthBlockNum to Block.Num to avoid unneeded repetition
- API:
	- Add UpdateNetworkInfoBlock to update just block information, to be
	  used when the node is not yet synchronized
- Node:
	- Call API.UpdateMetrics and UpdateRecommendedFee in a loop, with
	  configurable time intervals
- Synchronizer:
	- When mapping events by TxHash, use an array to support the possibility
	  of multiple calls of the same function happening in the same
	  transaction (for example, a smart contract in a single transaction
	  could call withdraw with delay twice, which would generate 2 withdraw
	  events, and 2 deposit events).
	- In Stats, keep entire LastBlock instead of just the blockNum
	- In Stats, add lastL1BatchBlock
	- Test Stats and SCVars
- Coordinator:
	- Enable writing the BatchInfo in every step of the pipeline to disk
	  (with JSON text files) for debugging purposes.
	- Move the Pipeline functionality from the Coordinator to its own struct
	  (Pipeline)
	- Implement shouldL1lL2Batch
	- In TxManager, implement logic to perform several attempts when doing
	  ethereum node RPC calls before considering the error. (Both for calls
	  to forgeBatch and transaction receipt)
	- In TxManager, reorganize the flow and note the specific points in
	  which actions are made when err != nil
- HistoryDB:
	- Implement GetLastL1BatchBlockNum: returns the blockNum of the latest
	  forged l1Batch, to help the coordinator decide when to forge an
	  L1Batch.
- EthereumClient and test.Client:
	- Update EthBlockByNumber to return the last block when the passed
	  number is -1.

api/slots.go

@@ -116,9 +116,9 @@ func (a *API) getSlot(c *gin.Context) {
 
 	var slot SlotAPI
 	if err == sql.ErrNoRows {
-		slot = a.newSlotAPI(slotNum, currentBlock.EthBlockNum, nil, auctionVars)
+		slot = a.newSlotAPI(slotNum, currentBlock.Num, nil, auctionVars)
 	} else {
-		slot = a.newSlotAPI(bid.SlotNum, currentBlock.EthBlockNum, &bid, auctionVars)
+		slot = a.newSlotAPI(bid.SlotNum, currentBlock.Num, &bid, auctionVars)
 	}
 
 	// JSON response
@@ -221,7 +221,7 @@ func (a *API) getSlots(c *gin.Context) {
 				retBadReq(err, c)
 				return
 			}
-			currentSlot := a.getCurrentSlot(currentBlock.EthBlockNum)
+			currentSlot := a.getCurrentSlot(currentBlock.Num)
 			auctionVars, err := a.h.GetAuctionVars()
 			if err != nil {
 				retBadReq(err, c)
@@ -268,7 +268,7 @@ func (a *API) getSlots(c *gin.Context) {
 	// Build the slot information with previous bids
 	var slotsBids []SlotAPI
 	if len(bids) > 0 {
-		slotsBids = a.newSlotsAPIFromWinnerBids(fromItem, order, bids, currentBlock.EthBlockNum, auctionVars)
+		slotsBids = a.newSlotsAPIFromWinnerBids(fromItem, order, bids, currentBlock.Num, auctionVars)
 		if err != nil {
 			retBadReq(err, c)
 			return
@@ -296,7 +296,7 @@ func (a *API) getSlots(c *gin.Context) {
 				}
 			}
 			if !found {
-				slots, err = a.addEmptySlot(slots, i, currentBlock.EthBlockNum, auctionVars, fromItem, order)
+				slots, err = a.addEmptySlot(slots, i, currentBlock.Num, auctionVars, fromItem, order)
 				if err != nil {
 					retBadReq(err, c)
 					return