Implement Pipeline.prepareForgeBatchArgs()

- Implement Pipeline.prepareForgeBatchArgs()
- Add a minimal stress test for the coordinator (that also runs the
  synchronizer)
- Update txprocessor.ProcessTxs() to return valid results for batches without
  transactions
  	- Add the boilerplate for the corresponding test, leaving as TODO the
	  zkInput values
- Update prover client to use the same point format as proof server (projective)
- Update interface of TxSelector.GetCoordIdxs to also return the authorizations
  to create accounts that go with the l1CoordinatorTxs.

test/proofserver/proofserver.go

@@ -67,6 +67,50 @@ func (s *Mock) handleCancel(c *gin.Context) {
 	c.JSON(http.StatusOK, "OK")
 }
 
+/* Status example from the real server proof:
+
+Status:
+{
+  "proof": "{\n    \"pi_a\": [\n        \"1368015179489954701390400359078579693043519447331113978918064868415326638035\",\n        \"9918110051302171585080402603319702774565515993150576347155970296011118125764\",\n        \"1\"\n    ],\n    \"pi_b\": [\n        [\n            \"10857046999023057135944570762232829481370756359578518086990519993285655852781\",\n            \"11559732032986387107991004021392285783925812861821192530917403151452391805634\"\n        ],\n        [\n            \"8495653923123431417604973247489272438418190587263600148770280649306958101930\",\n            \"4082367875863433681332203403145435568316851327593401208105741076214120093531\"\n        ],\n        [\n            \"1\",\n            \"0\"\n        ]\n    ],\n    \"pi_c\": [\n        \"1368015179489954701390400359078579693043519447331113978918064868415326638035\",\n        \"9918110051302171585080402603319702774565515993150576347155970296011118125764\",\n        \"1\"\n    ],\n    \"protocol\": \"groth\"\n}\n",
+  "pubData": "[\n    \"8863150934551775031093873719629424744398133643983814385850330952980893030086\"\n]\n",
+  "status": "success"
+}
+
+proof:
+{
+    "pi_a": [
+        "1368015179489954701390400359078579693043519447331113978918064868415326638035",
+        "9918110051302171585080402603319702774565515993150576347155970296011118125764",
+        "1"
+    ],
+    "pi_b": [
+        [
+            "10857046999023057135944570762232829481370756359578518086990519993285655852781",
+            "11559732032986387107991004021392285783925812861821192530917403151452391805634"
+        ],
+        [
+            "8495653923123431417604973247489272438418190587263600148770280649306958101930",
+            "4082367875863433681332203403145435568316851327593401208105741076214120093531"
+        ],
+        [
+            "1",
+            "0"
+        ]
+    ],
+    "pi_c": [
+        "1368015179489954701390400359078579693043519447331113978918064868415326638035",
+        "9918110051302171585080402603319702774565515993150576347155970296011118125764",
+        "1"
+    ],
+    "protocol": "groth"
+}
+
+pubData:
+[
+    "8863150934551775031093873719629424744398133643983814385850330952980893030086"
+]
+*/
+
 func (s *Mock) handleStatus(c *gin.Context) {
 	s.RLock()
 	c.JSON(http.StatusOK, prover.Status{
@@ -133,11 +177,11 @@ func (s *Mock) runProver(ctx context.Context) {
 			s.counter++
 			// Mock data
 			s.proof = fmt.Sprintf(`{
-				"pi_a": ["%v", "%v"],
-				"pi_b": [["%v", "%v"],["%v", "%v"],["%v", "%v"]],
-				"pi_c": ["%v", "%v"],
+				"pi_a": ["%v", "%v", "1"],
+				"pi_b": [["%v", "%v"],["%v", "%v"],["1", "0"]],
+				"pi_c": ["%v", "%v", "1"],
 				"protocol": "groth16"
-			}`, i, i+1, i+2, i+3, i+4, i+5, i+6, i+7, i+8, i+9) //nolint:gomnd
+			}`, i, i+1, i+2, i+3, i+4, i+5, i+6, i+7) //nolint:gomnd
 			s.pubData = fmt.Sprintf(`[
 				"%v"
 			]`, i+42) //nolint:gomnd