add: simple agent and bluesky adaptive functionality

[maffettone]

This adds a simple agent to work with the caproto backed random walk. It performs some trivial and useless logic on top of scans of the random walk device. It publishes a random Perlin image as its "brain" to demonstrate how to log internals of an agent into tiled.

Some other fixes and maintenance to make this possible.

• Docker compose lint
• qserver compatibility with Happi
• polish the index.html landing page
• explicitly labeling the caproto services as EPICS_CA_ADDR_LIST in bluesky launch file.

[maffettone]

@tacaswell It feels like overkill, but without ipcalc (on OSX), this seems to be the best way to ensure that all of the caproto containers are on a common broadcast, and setting the EPICS_CA_ADDR_LIST to that one broadcast.

More code than just enumerating the addresses, but cleaner in the result.

[maffettone]

It was overkill, and have opted for the Auto generation of addresses instead.
Conversation here:
https://mattermost.hzdr.de/bluesky/pl/wa4eyqmebfds9fsk59noihdxyo

[maffettone]

Result of HTML for posterity.

[maffettone]

Pinging @mrakitin for review since we just walked through some of this.