feat: Halloween Theme

[mlajkim]

Background

Cute logo:

Halloween theme:

Checklist Before PR Review

• The following has been handled:
  • Draft is set for this PR
  • Title is checked
  • Background is filled
  • Assignee is set
  • Labels are set
  • development is linked if related issue exists

Checklist (Right Before PR Review Request)

• The following has been handled:
  • Final Operation Check is done
  • Make this PR as an open PR

Checklist (Reviewers)

• Check if there are any other missing TODOs that are not yet listed
• Review Code
• Every item on the checklist has been addressed accordingly
• If development is associated to this PR, you must check if every TODOs are handled

[mlajkim]

TODOs:

• Create Halloween for CGT too!
• Create another theme and test it maybe:
  • Christmas
  • New Year
  • Sakura (Pink during the spring)