Feature/create template

[wr1159]

Summary

Integration with firestore, add event, add template.

Changes

• Event Page
• Editor Page
• Fetch From Firestore
• Write to Firestore
• Buttons refactor

Dev testing

Checklist

• [x] Test coverage has not deteriorated
• [x] CI is green
• [x] Added hours into project log
• [x] Strikethrough in sprint google slides.

[github-actions[bot]]

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