Remove addition of candidates on ballot creation

[what-the-diff[bot]]

PR Summary

• Adjustments to .anvil_editor.yaml New forms for creating ballots have been added (forms.routes.ballot.Create). The order of forms.routes.ballot.Index and forms.routes.ballot.Read has been altered for better usage flow.

• Removal of unused files and code Certain Python files and form templates used for ballot creation (client_code/forms/routes/ballot/Create/Candidate/__init__.py and client_code/forms/routes/ballot/Create/Candidate/form_template.yaml) have been deleted to enhance code cleanliness.

• Code cleanup in ballot creation Within the ballot creation file (client_code/forms/routes/ballot/Create/__init__.py), unused import and functions have been removed, promoting more efficient code.

• Form template modification The ballot creation form template (client_code/forms/routes/ballot/Create/form_template.yaml) has been adjusted. Component sizes have been changed, and several components including label_4, flow_panel_2, add_candidate_button, and tabulator have been removed for an easier-to-use interface.

• Styling changes in ballot reading form The ballot reading form (client_code/forms/routes/ballot/Read/form_template.yaml) has experienced minor styling adjustments to improve visual aesthetics.

• Updates to Ballot class The Ballot class in client_code/model.py now includes a candidate_group_id attribute, aiding in better group identification.

• Code improvements in storage services Debugging print statements have been removed from client_code/services/storage.py for cleaner output. The candidate_group_id is now included when a ballot is registered, providing more detailed information.