feat(loadgen): adding loadgen binary #2614

Job	Run time
Detect code changes	5s
Determine Image Tag	3s
test / Run Integration Tests	2m 12s
test / Go Mod Tidy Check	42s
test / Run Unit Tests	4m 16s
proto / buf-check	7s
test / Build All ev-node Binaries	2m 38s
lint / hadolint	8s
lint / yamllint	16s
lint / goreleaser-check	9s
lint / golangci-lint	1m 29s
lint / markdown-lint	3m 27s
docker / Build ev-node-evm	22m 18s
docker / Build ev-node-loadgen	15m 47s
docker / Build ev-node-testapp	18m 19s
docker / Build ev-node-grpc	18m 1s
test / Run E2E System Tests	12m 35s
test / Run EVM Execution Tests	2m 27s
test / Combine and Upload Coverage	4m 40s
docker-tests / Docker E2E Tests	7m 7s
docker-tests / Docker Upgrade E2E Tests	5m 20s
docker-tests / Docker Compatibility E2E Tests	5m 5s
	2h 7m 11s

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