Add install protobuf-gen-go install script

go/.local/bin/install-protobuf-go

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+set -e
+
+# shellcheck disable=SC1090
+source "${XDG_DATA_HOME}/buddy-up/includes/utils.sh"
+
+APP=protoc-gen-go
+VERSION=${VERSION:-1.27.1}
+DEST="${XDG_DATA_HOME}/apps/releases/${APP}"
+URL=https://github.com/protocolbuffers/protobuf-go/releases/download/v${VERSION}/protoc-gen-go.v${VERSION}.$(get_os).$(get_arch).tar.gz
+
+extract_tarball "${URL}" "${DEST}/${VERSION}"
+set_current_link "${DEST}" "${VERSION}"
+set_link "${XDG_BIN_HOME}/${APP}" "${DEST}" "${APP}"