feat #11: release hrp cli binaries automatically with github actions

feat #20: add Makefile for running unittest and building hrp cli binary

hrp/scripts/build.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+# build hrp cli binary for testing
+# release will be triggered on github actions, see .github/workflows/release.yml
+
+# Usage:
+# $ make build
+# or
+# $ bash hrp/scripts/build.sh
+
+set -e
+set -x
+
+# prepare path
+mkdir -p "output"
+bin_path="output/hrp"
+
+# build
+go build -ldflags '-s -w' -o "$bin_path" hrp/main.go
+
+# check output and version
+ls -lh "$bin_path"
+chmod +x "$bin_path"
+./"$bin_path" -v