Reorganise endpoints

The current set of endpoint names is a bit of a non-standard mess. I would propose to group and rename them within coco. This could probably be reflected by giving the endpoint directory a hierarchy which represents how things should be grouped. Note we might also want to add an `alias:` field into the endpoints to allow things to also be called under their old names.

I would propose we use a `noun-verb` organisation, and try and standardise some names. Something like:

```
baseband/
status
new
blacklist/
add # For this we need to unroll the update commands into endpoints which is probably better anyway
remove
clear
status
cluster/
start
stop
restart
check-config
check-md5
...
```