Added lint-check.yml to fail pr when user does not run make check before making a pr

[ariana-r-chowdhury]

Issue #183

I modeled this following UTD Trends' lint check. The workflow runs when a pull
request is made to develop (and on pushes to develop, or manually). It
runs on ubuntu-latest with these steps:

• Checkout: downloads my code onto the robot
• Set up Go: installs Go 1.26
• Setup: runs make setup to install staticcheck and goimports
• Check: runs make check
• Fail if files changed: runs git diff --exit-code. If make check had
  to change any file, the check fails.

I had never worked with GitHub workflows before, so this was a big learning step. I used GitHub's "Creating an example workflow" docs to understand how a workflow operates, as well as checked out the api-tools workflow to better understand what is needed to solve this issue.

[justinschwerdtfeger]

Woah! This is great! I'm checking it out rn

[justinschwerdtfeger]

This is great!

git diff is a great way to check for changes!

Small tweak:
Lets copy this over to our existing go.yml instead of running a new github action

[ariana-r-chowdhury]

Thanks! I will do that by this afternoon and submit another pr.

[mikehquan19]

You just need to push update commit. Pr will auto-update :)

[ariana-r-chowdhury]

I added the "Fail if files changed" step (git diff --exit-code) to go.yml
in the build_Ubuntu job right after make check, and removed the separate
lint-check.yml.