CI: pyright in github actions (#3121)

* CI: strict mypy check in github actions

mypy_files.txt is a list of files that will fail the CI if mypy finds errors in them

* don't need these

* `Any` should be a way to silence the type checker

* restrict return Any

* CI: pyright in github actions

* fix mistake in translating from mypy

* missed another change from mypy to pyright

* pin pyright version

* add more paths that should trigger check

* use Python instead of bash

* type error for testing CI

* Revert "type error for testing CI"

This reverts commit 99f65f3dad.

* oops

* don't need to redirect output

.github/workflows/strict-type-check.yml

@@ -0,0 +1,33 @@
+name: type check
+
+on:
+  pull_request:
+    paths:
+      - "**.py"
+      - ".github/pyright-config.json"
+      - ".github/workflows/strict-type-check.yml"
+      - "**.pyi"
+  push:
+    paths:
+      - "**.py"
+      - ".github/pyright-config.json"
+      - ".github/workflows/strict-type-check.yml"
+      - "**.pyi"
+
+jobs:
+  pyright:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: "Install dependencies"
+        run: |
+          python -m pip install --upgrade pip pyright==1.1.358
+          python ModuleUpdate.py --append "WebHostLib/requirements.txt" --force --yes
+
+      - name: "pyright: strict check on specific files"
+        run: python .github/type_check.py