Move progress bar code into submodule

[szokeasaurusrex]

Moving the progress bar code into a submodule will allow us to move the ProgressBarMode code from the api module next to the progress bar code. I will create a separate PR to move the ProgressBarMode code

[loewenheim]

I'm not sure why moving ProgressBarMode here requires the creation of a bar module? Without the further change, this just leaves the progress module empty. Is there a reason all the progress bar code can't be in one file?

[szokeasaurusrex]

@loewenheim I made those changes in #2041, which depends on this PR, and which it seems you already approved. I had forgotten to request review on this PR at the same time, sorry if that caused any confusion!

[loewenheim]

(I assume you mean #2041)

Right. Looking at both these PRs together, I think the progress module is small enough (around 100 lines) that splitting it into bar and mode modules is unnecessary, but it's up to you.

[github-actions]

This pull request has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you label it Status: Backlog or Status: In Progress, I will leave it alone ... forever!

---

"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀

[szokeasaurusrex]

Right. Looking at both these PRs together, I think the progress module is small enough (around 100 lines) that splitting it into bar and mode modules is unnecessary, but it's up to you.

Okay, then I will have everything in a single module. I changed #2041 accordingly, and will close this PR in favor of #2041