refactor: upgrade project dependencies (#4)

refactor:
* feat: upgrade go version

* fix: expand test coverage

* fix: include coverage analysis, increased from 63 to 78 per cent

* fix: erase sonarqube findings

* feat: modernize imports and replace some libs with new standards

Author: janiodev

.gitignore

@@ -85,4 +85,7 @@ fabric.properties
 .idea/httpRequests
 
 # Android studio 3.1+ serialized cache file
-.idea/caches/build_file_checksums.ser
+.idea/caches/build_file_checksums.ser
+
+coverage.html
+coverage.txt

Makefile

@@ -0,0 +1,118 @@
+.PHONY: help build run test fmt docs clean vet lint coverage install-tools
+
+# Variables
+BINARY_NAME=lime-go
+GO=go
+GOFLAGS=-v
+GOTEST=$(GO) test
+GOVET=$(GO) vet
+GOFMT=gofmt
+GODOC=$(GO) doc
+MODULE=github.com/takenet/lime-go
+TEST_PACKAGES=$(shell $(GO) list ./... | grep -v '/examples/')
+
+# Default target
+help: ## Display this help message
+	@echo "Available targets:"
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2}'
+
+build: ## Build the project
+	@echo "Building..."
+	$(GO) build $(GOFLAGS) ./...
+
+run: ## Run the example client
+	@echo "Running example client..."
+	$(GO) run examples/client/main.go
+
+run-server: ## Run the example server
+	@echo "Running example server..."
+	$(GO) run examples/server/main.go examples/server/certificate.go examples/server/credentials.go
+
+run-ws-chat: ## Run the websocket chat server
+	@echo "Running websocket chat server..."
+	$(GO) run examples/ws-chat/server/main.go
+
+test: ## Run all tests with race detector
+	@echo "Running tests with race detector..."
+	$(GOTEST) $(GOFLAGS) -race -coverprofile=coverage.txt -covermode=atomic $(TEST_PACKAGES)
+
+test-no-race: ## Run all tests without race detector
+	@echo "Running tests without race detector..."
+	$(GOTEST) $(GOFLAGS) -coverprofile=coverage.txt -covermode=atomic $(TEST_PACKAGES)
+
+test-short: ## Run tests in short mode
+	@echo "Running short tests..."
+	$(GOTEST) $(GOFLAGS) -short $(TEST_PACKAGES)
+
+test-verbose: ## Run tests with verbose output
+	@echo "Running tests with verbose output..."
+	$(GOTEST) -v -race -coverprofile=coverage.txt -covermode=atomic $(TEST_PACKAGES)
+
+coverage: test ## Run tests and show coverage
+	@echo "Generating coverage report..."
+	$(GO) tool cover -html=coverage.txt -o coverage.html
+	@echo "Coverage report generated: coverage.html"
+
+fmt: ## Format code with gofmt
+	@echo "Formatting code..."
+	$(GOFMT) -s -w .
+	@echo "Code formatted successfully"
+
+fmt-check: ## Check if code is formatted
+	@echo "Checking code format..."
+	@test -z "$$($(GOFMT) -l .)" || (echo "Code is not formatted. Run 'make fmt'" && exit 1)
+
+vet: ## Run go vet
+	@echo "Running go vet..."
+	$(GOVET) ./...
+
+lint: ## Run golangci-lint (requires golangci-lint installed)
+	@echo "Running linter..."
+	@which golangci-lint > /dev/null || (echo "golangci-lint not installed. Run 'make install-tools'" && exit 1)
+	golangci-lint run ./...
+
+docs: ## Generate and display documentation
+	@echo "Generating documentation..."
+	@echo "Main package:"
+	$(GODOC) $(MODULE)
+	@echo "\nFor full documentation, run: godoc -http=:6060"
+	@echo "Then visit: http://localhost:6060/pkg/$(MODULE)/"
+
+docs-serve: ## Serve documentation on http://localhost:6060
+	@echo "Starting documentation server..."
+	@which godoc > /dev/null || (echo "godoc not installed. Run 'make install-tools'" && exit 1)
+	godoc -http=:6060
+
+clean: ## Clean build artifacts and test cache
+	@echo "Cleaning..."
+	$(GO) clean
+	rm -f coverage.txt coverage.html
+	@echo "Clean complete"
+
+clean-cache: ## Clean Go build and module cache (fixes version mismatch issues)
+	@echo "Cleaning Go cache..."
+	$(GO) clean -cache -modcache -i -r
+	@echo "Cache cleaned. Run 'make deps' to re-download dependencies."
+
+tidy: ## Tidy and verify module dependencies
+	@echo "Tidying module dependencies..."
+	$(GO) mod tidy
+	$(GO) mod verify
+
+install-tools: ## Install development tools
+	@echo "Installing development tools..."
+	$(GO) install golang.org/x/tools/cmd/godoc@latest
+	$(GO) install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+	@echo "Tools installed successfully"
+
+deps: ## Download dependencies
+	@echo "Downloading dependencies..."
+	$(GO) mod download
+
+check: fmt-check vet test ## Run all checks (format, vet, test)
+
+ci: check lint ## Run all CI checks
+
+all: clean deps build test ## Clean, download deps, build and test
+
+.DEFAULT_GOAL := help