[wpimath] Use jinja for codegen (#3574)

While not really needed for wpimath, it will make more complex codegen
in the future significantly easier.

.github/workflows/lint-format.yml

@@ -63,6 +63,8 @@ jobs:
           sudo apt-get install -y clang-tidy-12 clang-format-12
       - name: Install wpiformat
         run: pip3 install wpiformat
+      - name: Install jinja
+        run: python -m pip install jinja2
       - name: Create compile_commands.json
         run: mkdir build-cmake && cd build-cmake && cmake -DWITH_OLD_COMMANDS=ON -DWITH_EXAMPLES=ON -DCMAKE_EXPORT_COMPILE_COMMANDS=YES ..
       - name: List changed files