luci-app-dockerman: convert to JS

luci-app-dockerman: convert to JS

This is a complete rewrite of the original Lua
dockerman in ECMAScript and ucode. Now with most of the
Lua gone, we can rename LuCI to JUCI. JavaScript ucode
Configuration Interface :)

Docker manager basically saw no updates or bug fixes
due to the Lua update embargo and transition to ECMAScript
in the luci repo.

But now that the app is rewritten, updates should come
readily from the community. Expect a few bugs in this,
although it has seen lots of testing - it's also seen lots
of development in different directions. Networking
scenarios might require some additions and fixes to the
GUI.

Swarm functionality is not implemented in this client and
is left as an exercise to the community and those with time.
All functionality found in the original Lua version is
present in this one, except for container "upgrade".
Some minor differences are introduced to improve layout and
logic.

There is no "remote endpoint" any longer since sockets
are the main method of connecting to dockerd - and sockets
accept remote connections. Docker manager and dockerd
on the same host are a remote connection. Buuut, dockerd
removes listening on any IP without --tls* options after v27.

There is no encryption between docker manager and the
API endpoint, or the container consoles when using the
standard /var/run/docker.sock.

See: https://github.com/openwrt/luci/issues/7310

TODO: handle image update ("Upgrade") for a container

Signed-off-by: Paul Donald <redacted>