feat(backend): add typechecking with ty (#9664)

* Add ty for type checking

* fix various typing issues

* fix req

* more fixes

* and more types

* and more typing

* fix imports

* more fixes

* fix types and optional statements

* ensure patch only runs if it is installed

* add type check to qc

* more fixes

* install all reqs

* fix more types

* more fixes

* disable container stuff for now

* move typecheck to seperate job

* try to use putput for path

* use env instead

* fix typo

* add missing install

* remove unclear imports - not sure why this was done

* add kwarg names

* fix introduced issue in url call

* ignore import

* fix broken typing changes

* fix filter import

* reduce change set

* remove api-change

* fix dict

* ignore typing errors

* fix more type issues

* ignore errors

* style fix

* fix type

* bump ty

* fix more

* type fixes

* update ignores

* fix import

* fix defaults

* fix ignore

* fix some issues

* fix type

.github/workflows/qc_checks.yaml

@@ -97,6 +97,27 @@ jobs:
           pip install --require-hashes -r contrib/dev_reqs/requirements.txt
           python3 .github/scripts/version_check.py
 
+  typecheck:
+    name: Style [Typecheck]
+    runs-on: ubuntu-24.04
+    needs: [paths-filter, pre-commit]
+    if: needs.paths-filter.outputs.server == 'true' || needs.paths-filter.outputs.requirements == 'true' || needs.paths-filter.outputs.force == 'true'
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4.2.2
+        with:
+          persist-credentials: false
+      - name: Environment Setup
+        id: setup
+        uses: ./.github/actions/setup
+        with:
+          apt-dependency: gettext poppler-utils
+          dev-install: true
+          update: true
+      - name: Check types
+        run: |
+          ty check --python ${Python_ROOT_DIR}/bin/python3
+
   mkdocs:
     name: Style [Documentation]
     runs-on: ubuntu-24.04