refactor:Added Integration test and tiny refactoring (#23)

* Refactoring name convention

* Added integration test

* Added Makefile

* Bump golang.org/x/crypto from 0.0.0-20220826181053-bd7e27e6170d to 0.6.0

Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.0.0-20220826181053-bd7e27e6170d to 0.6.0.
- [Release notes](https://github.com/golang/crypto/releases)
- [Commits](https://github.com/golang/crypto/commits/v0.6.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

* Upgrade go from 1.16 to 1.20

* Added integration test: HTTP, TCP, SSH

* Added Makefile Improve README.md

* Fixed unit test CI

* Fixed go-version

* Added integration test into C.I. actions

---------

Signed-off-by: Mario Candela <m4r10.php@gmail.com>
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Makefile

@@ -0,0 +1,24 @@
+DOCKER_COMPOSE := $(shell which docker-compose)
+
+ifeq (${DOCKER_COMPOSE},)
+DOCKER_COMPOSE = docker compose
+endif
+
+beelzebub.start:
+	${DOCKER_COMPOSE} build;
+	${DOCKER_COMPOSE} up -d;
+
+beelzebub.stop:
+	${DOCKER_COMPOSE} down;
+
+test.unit:
+	go test ./...
+
+test.unit.verbose:
+	go test ./... -v
+
+test.integration:
+	INTEGRATION=1 go test ./...
+
+test.integration.verbose:
+	INTEGRATION=1 go test ./... -v