 NO-JIRA: add .asf.yaml file with github repo metadata
 NO-JIRA: add .asf.yaml file with github repo metadata

> When making use of a feature in .asf.yaml, please ensure that you have discussed this with the entire project first, and have understood what the configuration changes will do to your workflow and project resources.
>    ~~ https://cwiki.apache.org/confluence/display/INFRA/.asf.yaml+features+for+git+repositories

I believe that the github config part (setting tagline and project labels) is mostly harmless.

The GitHub project page currently has a somewhat random set of tags at the top,
so this should be a big improvement.

https://github.com/apache/activemq-artemis currently contains the following tags

    php, activemq, c, network-client, ruby, python, csharp, cplusplus, java, perl, network-server
kjniemi/activemq-artemis,andytaylor/activemq-artemis,kjniemi/activemq-artemis,clebertsuconic/activemq-artemis,apache/activemq-artemis,apache/activemq-artemis,apache/activemq-artemis,clebertsuconic/activemq-artemis,andytaylor/activemq-artemis,apache/activemq-artemis,TomRoss/activemq-artemis,jbertram/activemq-artemis,andytaylor/activemq-artemis,clebertsuconic/activemq-artemis,kjniemi/activemq-artemis,tabish121/activemq-artemis,TomRoss/activemq-artemis,graben/activemq-artemis,kjniemi/activemq-artemis,graben/activemq-artemis,TomRoss/activemq-artemis,jbertram/activemq-artemis,tabish121/activemq-artemis,tabish121/activemq-artemis,kjniemi/activemq-artemis,andytaylor/activemq-artemis,jbertram/activemq-artemis,graben/activemq-artemis,clebertsuconic/activemq-artemis,TomRoss/activemq-artemis,graben/activemq-artemis,jbertram/activemq-artemis,tabish121/activemq-artemis