feat: counting by summing each participant (#112)

This PR changes the way we count the actual number of validators by
summing `count`s for each participant and multiplying by the number of
validator keys per node.

Resolves https://github.com/kurtosis-tech/eth2-package/issues/111

Changelog picked up from commits here:

feat: counting by summing each participant

src/package_io/parse_input.star

@@ -45,6 +45,7 @@ def parse_input(input_args):
 				participants.append(new_participant)
 			result["participants"] = participants
 
+	total_participant_count = 0
 	# validation of the above defaults
 	for index, participant in enumerate(result["participants"]):
 		el_client_type = participant["el_client_type"]
@@ -76,6 +77,8 @@ def parse_input(input_args):
 		validator_extra_params = participant.get("validator_extra_params", [])
 		participant["validator_extra_params"] = validator_extra_params
 
+		total_participant_count += participant["count"]
+
 	if result["network_params"]["network_id"].strip() == "":
 		fail("network_id is empty or spaces it needs to be of non zero length")
 
@@ -100,10 +103,13 @@ def parse_input(input_args):
 	if result["network_params"]["deneb_fork_epoch"] == 0:
 		fail("deneb_fork_epoch is 0 needs to be > 0 ")
 
-	required_num_validtors = 2 * result["network_params"]["slots_per_epoch"]
-	actual_num_validators = len(result["participants"]) * result["network_params"]["num_validator_keys_per_node"]
-	if required_num_validtors > actual_num_validators:
-		fail("required_num_validtors - {0} is greater than actual_num_validators - {1}".format(required_num_validtors, actual_num_validators))
+	if total_participant_count < 1:
+		total_participant_count = 1
+
+	required_num_validators = 2 * result["network_params"]["slots_per_epoch"]
+	actual_num_validators = total_participant_count * result["network_params"]["num_validator_keys_per_node"]
+	if required_num_validators > actual_num_validators:
+		fail("required_num_validators - {0} is greater than actual_num_validators - {1}".format(required_num_validators, actual_num_validators))
 
 	# Remove if nethermind doesn't break as second node we already test above if its the first node
 	if len(result["participants"]) >= 2 and result["participants"][1]["el_client_type"] == NETHERMIND_NODE_NAME: