add primitive release.sh

This just cross-arch compiles for release, does not do much right now.

Author: twmb

release.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -exu
+
+GOOS=windows GOARCH=amd64 go build && gzip -9 kcl.exe && mv kcl.exe.gz kcl_windows_amd64.gz
+GOOS=darwin GOARCH=amd64 go build && gzip -9 kcl && mv kcl.gz kcl_darwin_amd64.gz
+GOOS=linux GOARCH=arm64 go build && gzip -9 kcl && mv kcl.gz kcl_linux_arm64.gz
+GOOS=linux GOARCH=amd64 go build && gzip -9 kcl && mv kcl.gz kcl_linux_amd64.gz