CI: add tools to check ASF headers in code files (#26) * add license check. * Change the contents of the `Makefile`. * add `license_ci` file.
apisix-control-plane provide APISIX with a yml configuration capability, We can use yml to define the proxy behavior of APISIX
yml to define APISIX;Here are some examples of yml and we can add comments here. https://github.com/apache/apisix-control-plane/issues/3 We can also submit a PR to modify this document.