rpk: restore Makefile, update with current commands

This also includes a command for the newly added
bazel commands (autogenerates BUILD files)

src/go/rpk/Makefile

@@ -0,0 +1,87 @@
+# Copyright 2024 Redpanda Data, Inc.
+#
+# Use of this software is governed by the Business Source License
+# included in the file licenses/BSL.md
+#
+# As of the Change Date specified in that file, in accordance with
+# the Business Source License, use of this software will be governed
+# by the Apache License, Version 2.0
+
+GOCMD=go
+GOLANGCILINTCMD=golangci-lint
+GOFUMPTCMD=gofumpt
+BAZELCMD=bazel
+
+GOOS ?= $(shell go env GOOS)
+GOARCH ?= $(shell go env GOARCH)
+OUTDIR := $(GOOS)-$(GOARCH)
+
+REV := $(shell git rev-parse --short HEAD)
+VER := $(or $(VERSION),local-dev)
+IMG_TAG:= $(or $(VERSION),latest)
+BUILD_TIME=$(shell date -Iseconds)
+VER_PKG='github.com/redpanda-data/redpanda/src/go/rpk/pkg/cli/version'
+CONT_PKG='github.com/redpanda-data/redpanda/src/go/rpk/pkg/cli/container/common'
+
+LDFLAGS=-X $(VER_PKG).version=$(VER) -X $(VER_PKG).rev=$(REV) -X $(CONT_PKG).tag=$(IMG_TAG) -X ${VER_PKG}.hostOs=${GOOS} -X ${VER_PKG}.hostArch=${GOARCH} -X ${VER_PKG}.buildTime=${BUILD_TIME}
+
+.PHONY: ready
+ready: build test fmt lint bazel check_diff
+
+.PHONY: build
+build:
+	$(shell mkdir -p $(OUTDIR))
+	$(GOCMD) build -ldflags '$(LDFLAGS)' -o $(OUTDIR) ./...
+
+.PHONY: test
+test:
+	$(GOCMD) test ./... -count=1
+
+.PHONY: tidy
+tidy:
+	$(GOCMD) mod tidy
+
+.PHONY: lint
+lint: install_golangci_lint run_linter
+
+.PHONY: fmt
+fmt: install_gofumpt run_gofumpt
+
+.PHONY: bazel
+bazel: install_bazelisk bazel_generate_build bazel_tidy
+
+.PHONY: install_gofumpt
+install_gofumpt:
+	@echo "installing gofumpt..."
+	@$(GOCMD) install mvdan.cc/gofumpt@latest
+
+.PHONY: run_gofumpt
+run_gofumpt:
+	@echo "running gofumpt"
+	$(shell find -type f -name '*.go' | xargs -n1 $(GOFUMPTCMD) -w)
+
+.PHONY: install_golangcilint
+install_golangci_lint:
+	@echo "installing golangci-lint"
+	@$(GOCMD) install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+
+.PHONY: run_linter
+run_linter:
+	$(GOLANGCILINTCMD) run
+
+.PHONY: install_bazelisk
+install_bazelisk:
+	@echo "installing bazelisk"
+	@$(GOCMD) install github.com/bazelbuild/bazelisk@latest
+
+.PHONY: bazel_generate_build
+bazel_generate_build: install_bazelisk
+	@$(BAZELCMD) run //:gazelle
+
+.PHONY: bazel_tidy
+bazel_tidy: install_bazelisk
+	@$(BAZELCMD) mod tidy
+
+.PHONY: check_diff
+check_diff:
+	$(shell git diff --exit-code)