Makefile: Add makefile with linter and build

Makefile

@@ -0,0 +1,62 @@
+PKG := github.com/lightninglabs/lndmon
+ESCPKG := github.com\/lightninglabs\/lndmon
+
+LINT_PKG := github.com/golangci/golangci-lint/cmd/golangci-lint
+
+GO_BIN := ${GOPATH}/bin
+LINT_BIN := $(GO_BIN)/golangci-lint
+
+LINT_COMMIT := v1.18.0
+
+DEPGET := cd /tmp && GO111MODULE=on go get -v
+GOBUILD := GO111MODULE=on go build -v
+
+GOFILES_NOVENDOR = $(shell find . -type f -name '*.go' -not -path "./vendor/*")
+GOLIST := go list -deps $(PKG)/... | grep '$(PKG)'| grep -v '/vendor/'
+
+RM := rm -f
+CP := cp
+MAKE := make
+
+LINT = $(LINT_BIN) run -v
+
+default: build
+
+all: lint build
+
+# ============
+# DEPENDENCIES
+# ============
+
+$(LINT_BIN):
+	@$(call print, "Fetching linter")
+	$(DEPGET) $(LINT_PKG)@$(LINT_COMMIT)
+
+# ============
+# INSTALLATION
+# ============
+
+build:
+	@$(call print, "Building lndmon.")
+	$(GOBUILD) $(PKG)/cmd/lndmon
+
+# =========
+# UTILITIES
+# =========
+fmt:
+	@$(call print, "Formatting source.")
+	gofmt -l -w -s $(GOFILES_NOVENDOR)
+
+lint: $(LINT_BIN)
+	@$(call print, "Linting source.")
+	$(LINT)
+
+list:
+	@$(call print, "Listing commands.")
+	@$(MAKE) -qp | \
+		awk -F':' '/^[a-zA-Z0-9][^$$#\/\t=]*:([^=]|$$)/ {split($$1,A,/ /);for(i in A)print A[i]}' | \
+		grep -v Makefile | \
+		sort
+clean:
+	@$(call print, "Cleaning source.$(NC)")
+	$(RM) ./lndmon