Adds a feature to view exercise progress directly from the workout page.
- Modifies `templates/partials/topset.html`.
- Adds a graph icon next to the exercise name in the topset list.
- Clicking the icon uses HTMX to fetch and display the progress graph for that exercise inline in a new table row.
- Implements a dismiss button using hyperscript to hide the graph after viewing.
- Moved workout-related routes (create/delete/edit workouts, topsets, tags, start dates, show workout) from `app.py` into a new blueprint at `routes/workout.py`.
- Integrated workout view model logic from `features/workout.py` directly into `routes/workout.py` helper function `_get_workout_view_model`.
- Removed `features/workout.py` and the corresponding class instantiation in `db.py`.
- Registered the new `workout_bp` blueprint in `app.py`.
- Removed the original workout route definitions from `app.py`.
- Updated `url_for` calls in relevant templates (`workout.html`, `person_overview.html`, `partials/workout_tags.html`, `partials/topset.html`, `partials/start_date.html`, `partials/new_set_form.html`, `notes.html`, `calendar.html`) to reference the new blueprint endpoints (e.g., `workout.create_workout`).
- Updated `templates/changelog/changelog.html` to document this refactoring.
