Add basic CircleCI config

[jdeanwallace]

Related #3

To eventually build a uStreamer Debian package in CI, we first need basic CI config.

This PR copies the following scripts from the TinyPilot Community repo and executes them as CircleCI jobs:

• dev-scripts/check-bash
• dev-scripts/check-trailing-newline
• dev-scripts/check-trailing-whitespace

[jdeanwallace]

@mtlynch - can you enable CircleCI for this repo please? link

[mtlynch]

@jdeanwallace - Enabled!

[jotaen4tinypilot]

@mtlynch do we have to enable CodeApprove per repo? It didn’t seem to be available here, so I approved via Github.

[mtlynch]

@jotaen4tinypilot - Oh, yeah. I've just enabled it. I tried forcing it to create the review sticker in the PR description, but it doesn't seem to want to, but hopefully it works on future reviews

https://codeapprove.com/pr/tiny-pilot/ustreamer-debian/5

[jotaen4tinypilot]

Automated comment from CodeApprove ➜

✔️ Approved

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👀 @jdeanwallace it's your turn please take a look

[jotaen4tinypilot]

Thanks!

I tried forcing it to create the review sticker in the PR description, but it doesn't seem to want to, but hopefully it works on future reviews

For me, the button / sticker shows up now: (maybe it was delayed?)

[mtlynch]

@jotaen4tinypilot - Oh, yeah, showing up for me too now.