Run proj dtgen in CI

[lockshaw]

Description of changes:

Run proj dtgen in CI so that .dtg.h and .dtg.cc files don't need to be committed into the repo

Related Issues:

Linked Issues:

• Issue #

Issues closed by this PR:

• Closes #

---

This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 39.28%. Comparing base (d456733) to head (f17a59b).

Additional details and impacted files

@@              Coverage Diff               @@
##           repo-refactor    #1424   +/-   ##
==============================================
  Coverage          39.28%   39.28%           
==============================================
  Files                253      253           
  Lines               8859     8859           
  Branches             324      324           
==============================================
  Hits                3480     3480           
  Misses              5379     5379           

Flag	Coverage Δ
unittests	39.28% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

[reyna-abhyankar]

Reviewed 282 of 282 files at r1, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @Bob-Chen222 and @lockshaw)

---

flake.nix line 104 at r1 (raw file):

              lcov # for code coverage
            ])
            (with proj-repo.packages.${system}; [

What does moving this here do?

---

.github/workflows/per-lib-check.yml line 57 at r1 (raw file):

      - name: Regenerate all dtgen files
        run: |
          proj dtgen --force --delete-outdated

So when pulling in changes, we should run this command?

[lockshaw]

Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @Bob-Chen222 and @reyna-abhyankar)

---

flake.nix line 104 at r1 (raw file):

Previously, reyna-abhyankar (Reyna Abhyankar) wrote…

What does moving this here do?

Makes proj available in CI (shouldn't develop experience at all, as the default shell inherits dependencies from the ci shell)

---

.github/workflows/per-lib-check.yml line 57 at r1 (raw file):

Previously, reyna-abhyankar (Reyna Abhyankar) wrote…

So when pulling in changes, we should run this command?

No, it (minus the force parameter) gets auto-run by proj build, proj test, etc. (I think also proj cmake). You shouldn't have to do anything differently on your side, this only affects CI

[reyna-abhyankar]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @Bob-Chen222)