Improve Makefile, auto-compress the release binaries.

Makefile

@@ -4,16 +4,20 @@ BUILD_INFO := -X "github.com/bojanz/broom.Version=$(VERSION)"
 FLAGS := -tags='osusergo' -trimpath -ldflags='$(BUILD_INFO) -s -extldflags "-static"'
 
 build: clean
-	go build -o ./bin/broom $(FLAGS) cmd/broom/*
+	go build -o bin/broom $(FLAGS) cmd/broom/*
 
 release: clean
-	GOOS=darwin  GOARCH=arm64 go build -o ./bin/broom-$(VERSION)-macos-arm64 $(FLAGS) cmd/broom/*
-	GOOS=darwin  GOARCH=amd64 go build -o ./bin/broom-$(VERSION)-macos-x64   $(FLAGS) cmd/broom/*
-	GOOS=linux   GOARCH=amd64 go build -o ./bin/broom-$(VERSION)-linux-x64   $(FLAGS) cmd/broom/*
-	GOOS=windows GOARCH=amd64 go build -o ./bin/broom-$(VERSION)-win64.exe   $(FLAGS) cmd/broom/*
+	GOOS=darwin  GOARCH=arm64 go build -o bin/broom-$(VERSION)-macos-arm64 $(FLAGS) cmd/broom/*
+	GOOS=darwin  GOARCH=amd64 go build -o bin/broom-$(VERSION)-macos-x64   $(FLAGS) cmd/broom/*
+	GOOS=linux   GOARCH=amd64 go build -o bin/broom-$(VERSION)-linux-x64   $(FLAGS) cmd/broom/*
+	GOOS=windows GOARCH=amd64 go build -o bin/broom-$(VERSION)-win64.exe   $(FLAGS) cmd/broom/*
+	cd bin && tar czvf broom-$(VERSION)-macos-arm64.tar.gz broom-$(VERSION)-macos-arm64 --remove-files
+	cd bin && tar czvf broom-$(VERSION)-macos-x64.tar.gz   broom-$(VERSION)-macos-x64   --remove-files
+	cd bin && tar czvf broom-$(VERSION)-linux-x64.tar.gz   broom-$(VERSION)-linux-x64   --remove-files
+	cd bin && zip -rm  broom-$(VERSION)-win64.zip          broom-$(VERSION)-win64.exe
 
 clean:
-	rm -rf ./bin
+	rm -rf bin
 
 lint: lint-goimports lint-gomod lint-govet lint-staticcheck