[red-knot] pull primer projects to run from file (#17473)

## Summary

The long line of projects in `mypy_primer.yaml` is hard to work with
when adding projects or checking whether they are currently run. Use a
one-per-line text file instead.

## Test Plan

Ecosystem check on this PR.

crates/red_knot_python_semantic/resources/primer/good.txt

@@ -0,0 +1,23 @@
+arrow
+async-utils
+bidict
+black
+dacite
+git-revise
+isort
+itsdangerous
+mypy_primer
+packaging
+paroxython
+porcupine
+psycopg
+pybind11
+pyinstrument
+pyp
+python-chess
+python-htmlgen
+rich
+scrapy
+typeshed-stats
+werkzeug
+zipp