feat: scaffold Go module with version command, Makefile and goreleaser config

Makefile

@@ -0,0 +1,26 @@
+BINARY  := agent-lib
+VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
+LDFLAGS := -s -w -X github.com/m3tam3re/agent-lib/internal/version.Version=$(VERSION)
+
+.PHONY: build test vet lint fmt fmt-check clean
+
+build:
+	go build -ldflags '$(LDFLAGS)' -o $(BINARY) .
+
+test:
+	go test ./...
+
+vet:
+	go vet ./...
+
+fmt:
+	gofmt -w .
+
+fmt-check:
+	@out=$$(gofmt -l .); if [ -n "$$out" ]; then \
+		echo "gofmt required on:"; echo "$$out"; exit 1; fi
+
+lint: vet fmt-check
+
+clean:
+	rm -rf $(BINARY) dist/