Feat/add prompts default value

[NinaDen]

Describe what changes this pull request brings

1. This pull request adds prompts defaults values to create template page
2. This default values are used in extension
3. The default values are added to animation

Describe any additional changes N/A

Steps to test

1. Open create template page
2. Create template with prompts default values
3. Confirm that the default values appear when create the template in the extension
4. Confirm that the default values appear in animation

Screenshots

Animation with default values:

Checklist

• [x] I've checked for typos
• [x] I've made sure overall structure consistency is preserved
• [x] I've made sure overall headings hierarchy is preserved
• [x] I've reread proposed changes twice

TODO

References Issue Add default values to prompts #108