`@Todo` annotation

[lars-reimann]

Is your feature request related to a problem? Please describe

Currently there is no way to take notes about

• updates that have to be done manually
• annotation that might be added later.

Desired solution

Add a @Todo annotation that

• is applicable to classes and functions (not parameters!)
• can be used once
• takes an arbitrary, potentially long text as input

In the generated Python code TODO comments with the text of the annotation should be added.

[lars-reimann]

The branch 515-todo-annotation already contains the required changes to the backend.

[Masara]

Ähnlich wie bei #517:

Summary of Changes

In src/features/annotations/annotationSlice.ts:

• Add interface for TodoAnnotation
• Update AnnotationStore
• Update initialState
• Add upsertTodo/removeTodo reducers to annotationsSlice
• Export these two reducers
• Add and export selectTodoAnnotation selector

In src/features/ui/uiSlice.ts:

• Add interface for TodoUserAction
• Update UserAction

Other:

• Update src/features/annotations/AnnotationDropdown.tsx (sort entries alphabetically)
• Update all places that use the AnnotationDropdown
• Update src/features/annotations/AnnotationImportDialog.tsx; might replace the object in line 25 with the initialState from src/features/annotations/annotationSlice.ts, so we don't need to update this in the future
• Update src/features/annotations/AnnotationView.tsx
• Add form in src/features/annotations/forms
• Update src/app/App.tsx to show form when corresponding user action is active
• Add filter annotation:@todo (src/features/packageData/model/filters/filterFactory.ts and src/features/packageData/model/filters/AnnotationFilter.ts)
• Update filter help text (src/common/FilterHelpButton.tsx)
• Update src/features/annotatedPackageData/model/InferableAnnotation.ts
• Update computation of number of annotations per element throughout the program (currently only heat map tags, later also Statistics View - Annotations #534)

Screenshots (if necessary)

Testing Instructions